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ASUS ROG Crosshair X870E Hero vs ASUS ROG STRIX B550-F GAMING WIFI II

A

Product A: ASUS

ROG Crosshair X870E Hero

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B

Product B: ASUS

ROG STRIX B550-F GAMING WIFI II

57 of 78 known

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Only differences

AASUS ROG Crosshair X870E Hero

BASUS ROG STRIX B550-F GAMING WIFI II

General

2 of 9 differ

Series

ROG Crosshair2Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-heroRead 15 October 2026The product page sits in the ROG Crosshair line.

ROG Strix2Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-modelRead 15 October 2026The page sits in the ROG Strix line, under Gaming Motherboards.

Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

ROG CROSSHAIR X870E HERO, 90MB1IE0-M0EAY011Retailer pageshop.sumanet.cz/90mb1ie0-m0eay0-asus-mb-sc-am5-rog-crosshair-x870e-hero-amd-x870-4xddr5-1xhdmi-2xthunderbolt-wifiRead 15 October 2026Type designation 90MB1IE0-M0EAY0.

ROG STRIX B550-F GAMING WIFI II, 90MB19V0-M0EAY0, 90MB19V0-M0AAY03Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 2026Manual cover: ROG STRIX B550-F GAMING WIFI II.6Retailer pageparadigit.ie/asus-rog-strix-b550-f-gaming-wifi-ii-amd-b550-socket-am4-atx/21175029/productRead 15 October 2026Product number manufacturer: 90MB19V0-M0EAY0.7Retailer pagedirectcomputers.co.uk/fr/products/asus-rog-strix-b550-f-gaming-wifi-ii-amd-b550-am4-atx-4-ddr4-hdmi-dp-ax-wi-fi-6e-2-5gb-lan-rgb-lighting-2x-m-2Read 15 October 2026SKU 90MB19V0-M0EAY0. 90MB19V0-M0AAY0 comes from the main team's pick list, which gives it as a model number of the same board. No page that could be opened lists it.8Retailer pagevoelkner.de/products/5760723/Asus-ROG-STRIX-B550-F-GAMING-WIFI-II-Mainboard-Sockel-PC-AMD-AM4-Formfaktor-Details-ATX-Mainboard-Chipsatz-AMD-B550.htmlRead 15 October 2026Part number 90MB19V0-M0EAY0.

GTIN / EAN

471138771030210Retailer pagearvutitark.ee/en/pc-components/motherboards/asus-rog-crosshair-x870e-hero-amd-x870e-socket-am5-atx-1402616Read 15 October 2026The listing gives EAN 4711387710302 for the manufacturer code 90MB1IE0-M0EAY0.11Retailer pageshop.sumanet.cz/90mb1ie0-m0eay0-asus-mb-sc-am5-rog-crosshair-x870e-hero-amd-x870-4xddr5-1xhdmi-2xthunderbolt-wifiRead 15 October 2026The listing gives GTIN (EAN) 4711387710302.

4711081453314, 1955534533187Retailer pagedirectcomputers.co.uk/fr/products/asus-rog-strix-b550-f-gaming-wifi-ii-amd-b550-am4-atx-4-ddr4-hdmi-dp-ax-wi-fi-6e-2-5gb-lan-rgb-lighting-2x-m-2Read 15 October 2026The page's product data lists gtin13 4711081453314 for SKU 90mb19v0-m0eay0.8Retailer pagevoelkner.de/products/5760723/Asus-ROG-STRIX-B550-F-GAMING-WIFI-II-Mainboard-Sockel-PC-AMD-AM4-Formfaktor-Details-ATX-Mainboard-Chipsatz-AMD-B550.htmlRead 15 October 2026The listing carries EAN 4711081453314 for part number 90MB19V0-M0EAY0 and the UPC 195553453318 in its keywords.9Retailer page888lots.com/item/asus-rog-strix-b550-f-gaming-wifi-ii-amd-socket-am4-atx-ddr4-888-b09lvqcmk4-usRead 15 October 2026The Amazon catalog record for ASIN B09LVQCMK4 lists UPC 195553453318 and EAN 4711081453314 for the same board. The two codes differ and may be regional barcodes. Both are stored. The UPC check digit is valid. It is stored with 12 digits, as the sources print it.

AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

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Status

Available13Spec databasemaxmybuild.com/motherboards/asus-rog-crosshair-x870e-heroRead 15 October 2026Newegg and Amazon list the board in stock on 2026-10-14.

Available5Retailer pagestartech.com.bd/asus-rog-strix-b550-f-gaming-wifi-ii-motherboardRead 15 October 2026The listing shows a price of 23,300 BDT on 2026-10-15.10Revieweneba.com/hubRead 15 October 2026Affiliate review of 2026-08-06 says the board is number 2 on Amazon's Computer Motherboards best-seller list at $137. No tests or measurements are used from it.

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

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SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

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Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

$699.996Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026The review says the Hero is priced at the same MSRP as the X670E Hero, $699.99. US price from a reviewer, not a statement by ASUS. Tax is not included.

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Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

Not available

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MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

Not available

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ColoursiThe maker's own colour names

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SegmentiThe maker's own product category, e.g. ASUS ProArt is Creator. It is not assigned from price or features. Maker lines that are not gaming, creator or workstation lines, such as ASUS PRIME, MSI PRO and ASRock Pro, are mainstream.

Gaming1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026The page sits under ROG gaming motherboards (page title: ROG Crosshair, Gaming Motherboards).2Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-heroRead 15 October 2026The product sits in the ROG Crosshair line of ROG gaming motherboards.

Gaming2Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-modelRead 15 October 2026ROG Strix is ASUS's gaming board line, and the page is listed under Gaming Motherboards.

Board revisioniThe maker's revision name, e.g. rev. 1.1, for variant rows of revisions that keep the board's name and model number. Leave it out when the maker names no revision.

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Platform

3 of 4 differ

CPU socketiSocket name without spaces, e.g. AM5 or LGA1851.

AM51Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026CPU row: AMD Socket AM5.

AM41Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 2026AMD AM4 Socket for AMD Ryzen 5000 and 3000 Series and 5000 and 4000 G-Series Desktop Processors. The page refers to www.asus.com for the CPU support list.3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 2026Specifications summary: AMD AM4 Socket.

ChipsetiChipset with its brand and without the word chipset, e.g. AMD B850, AMD X870E or Intel Z890. Same form as desktop PCs and as compatible chipsets on CPUs.

AMD X870E1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Chipset row: AMD X870E.

AMD B5501Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 2026AMD B550 chipset.3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 2026Specifications summary: AMD B550 Chipset.

Supported processorsiProcessor series the maker lists for the board, one item per series in the chip maker's name. BIOS updates can add series later.

AMD Ryzen 9000 Series, AMD Ryzen 8000 Series, AMD Ryzen 7000 Series1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026CPU row: AMD Ryzen 9000 & 8000 & 7000 Series Desktop Processors. The page refers to the ASUS download center for the CPU support list. Read on 2026-10-15.

AMD Ryzen 5000 Series, AMD Ryzen 5000 G-Series, AMD Ryzen 4000 G-Series, AMD Ryzen 3000 Series1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 2026AMD Ryzen 5000 and 3000 Series Desktop Processors and AMD Ryzen 5000 and 4000 G-Series Processors. Written in the form used for the ASUS TUF GAMING B550-PLUS WIFI II in this catalog.3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 2026Specifications summary: AMD Ryzen 5000 and 3000 Series and 5000 and 4000 G-Series Desktop Processors. The manual refers to www.asus.com for the CPU support list. Read on 2026-10-15.

CPU overclockingiThe board allows multiplier overclocking of an unlocked CPU. Memory overclocking alone does not count.

Yes12Maker product pageamd.com/en/products/processors/chipsets/am5.htmlRead 15 October 2026AMD's chipset comparison lists Ryzen processor overclocking enabled: Yes for the X870E. This is the chip maker's page and not the board maker's.

Yes4Maker product pageamd.com/en/products/processors/chipsets/am4.htmlRead 15 October 2026AMD's AM4 chipset table lists overclocking enabled for the B550. This is the chip maker's page, not the board maker's.

Board

1 of 5 differ

Form factoriThe maker's stated board standard. Other covers sizes such as XL-ATX or Mini-DTX.

ATX1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Form Factor row: ATX Form Factor.

ATX1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 2026Form factor: ATX, 30.5cm x 24.4cm.3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 2026Specifications summary: ATX Form Factor, 12 inch x 9.6 inch (30.5 cm x 24.4 cm).

Board dimensionsiSize of the board itself. Height runs along the rear I/O edge, as the board stands in a tower case. ATX is 244 mm wide and 305 mm high. Micro ATX is 244 mm high and up to 244 mm wide. A size with a cover that reaches past the board, as NZXT prints, is not used when the maker also states the board size.

Width244Height305mm(9.6 × 12 in)3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/ROG_CROSSHAIR_X870E_HERO/E27104_ROG_CROSSHAIR_X870E_HERO_EM_V5_WEB.pdfRead 15 October 2026Specifications summary, Form Factor: ATX Form Factor, 12 inch x 9.6 inch (30.5 cm x 24.4 cm). Stored as 244 mm wide and 305 mm high.8Reviewkitguru.net/components/motherboard/leo-waldock/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec list: ATX 305mm x 244mm.

Width244Height305mm(9.6 × 12 in)1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 2026Form factor: ATX, 30.5cm x 24.4cm. The 244 mm side is the width, as for ATX.3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 202612 inch x 9.6 inch (30.5 cm x 24.4 cm). The 244 mm side is the width.

PCB layersiCopper layers in the circuit board as published.

85Maker product pagerog.asus.com/tw/motherboards/rog-crosshair/rog-crosshair-x870e-hero/awardRead 15 October 2026The awards page, in a quoted award text, says the ASUS ROG CROSSHAIR X870E HERO features an 8-layer 2oz Copper PCB. The same text is on the Swiss German, Philippine and Hong Kong pages. The spec page and overview do not state the layer count.

62Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-modelRead 15 October 2026Six-layer PCB: the 6-layer PCB quickly dissipates heat around the VRM.

Back-connect designiPower, fan and front-panel connectors sit on the back of the board to hide the cables, e.g. ASUS BTF, MSI Project Zero or GIGABYTE Stealth. It needs a case made for it.

No1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026The internal connector list shows the usual front-side headers. The BTF version is a separate model and is not this board.

No3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 2026The connector layout in chapter 1 shows the usual front-side power, fan and USB connectors. The board is not a back-connect design.

RGB lighting on the boardiLEDs on the board itself. Headers for external lighting are counted under Internal connectors. True only when the maker's spec or feature list names lighting on the board. A single small LED that a reviewer sees does not count.

Yes2Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-heroRead 15 October 2026Overview: the board features the Polymo Lighting II effect on the I/O zone, with ROG lettering lit by LEDs on the rear I/O cover.

Yes2Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-modelRead 15 October 2026The spec overview lists I/O Zone Aura lighting. The Aura text says the board has built-in Aura technology with full RGB control for embedded RGB LEDs and for strips on the onboard RGB headers.

Power delivery

5 of 6 differ

Power stage layoutiAs the maker publishes it, e.g. 18+2+2. The first number is the CPU core (Vcore) rail. Makers group the other rails differently, so compare the first number. Doubled or teamed stages are written as the maker prints them, such as MSI's 12+2+1 Duet Rail. A review's count of real phases goes in the source note.

18+2+22Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-heroRead 15 October 2026Overview: ROG Ultimate Power Solution 18(110A)+2(110A)+2(80A) Power Stages, and 18+2+2 power stages.6Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec table: 22 Phase (18x 110A SPS MOSFETs for Vcore).8Reviewkitguru.net/components/motherboard/leo-waldock/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec list: 18+2 x110A +2x80A Vishay Smart Power Stages with Asus Digi+ ASP2205 controller.9Reviewguru3d.com/review/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Product showcase page: an 18+2+2 phase VRM configuration with 110A power stages.

12+22Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-modelRead 15 October 2026Teamed power stages: 12+2 power stages combine high-side and low-side MOSFETs and drivers into a single package, with ASUS DIGI+ power control. No amp rating or controller part is named.

CPU core (Vcore) power stagesiPower stages on the Vcore rail. Makers call them phases or power stages. A doubled design has more stages than controller phases. Use the first number of the maker's layout, such as 14 for MSI's 14+2+1 Duet Rail. A review's different count goes in the source note.

182Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-heroRead 15 October 2026Overview: 18+2+2 power stages, with 18 on VCORE rated 110A, 2 on SoC and 2 on MISC.8Reviewkitguru.net/components/motherboard/leo-waldock/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec list: 18 Vcore stages at 110A.13Spec databasemaxmybuild.com/motherboards/asus-rog-crosshair-x870e-heroRead 15 October 2026Phase config 2x9+2+2, which is 18 stages on the Vcore rail.

122Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-modelRead 15 October 2026The first number of 12+2 is the Vcore rail. The page calls the stages teamed. They are counted as stages.

Vcore power stage ratingiCurrent rating of each Vcore power stage. Only a figure the maker or a copy of the maker's text states. A review's reading of the chip markings is not enough.

110A2Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-heroRead 15 October 2026Overview: VCORE (110A). The SoC stages are 110 A and the MISC stages 80 A. Each power stage has a choke rated 45 A.8Reviewkitguru.net/components/motherboard/leo-waldock/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec list: 110A stages. This agrees with the maker.

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VRM controlleriPWM controller chip with maker, e.g. MPS MP2857. One name: the maker's when published, otherwise the one name a review uses. No parentheses. Other names go in the source note. Use the part number without the date code in the chip marking.

ASUS ASP22056Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Power delivery has 22 phases, 18 of them Vcore. Power moves from the EPS connector to a Digi+ ASP2205 PWM controller, then to 18 Vishay SiC850A 110A power stages. KitGuru also names the ASP2205. ASUS is the maker of the Digi+ controllers.8Reviewkitguru.net/components/motherboard/leo-waldock/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec list: Asus Digi+ ASP2205 controller.

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CPU power connectorsiEPS 12 V connectors for the CPU as pin counts, e.g. 8+8 pin, 8+4 pin or 8 pin.

8+8 pin1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Power Related row: 2 x 8-pin +12V CPU Power connectors.2Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-heroRead 15 October 2026Overview: 8 + 8-pin ProCool II power connectors for the EPS 12V lines.

8+4 pin1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 2026Internal I/O: 1 x 8-pin +12V power connector and 1 x 4-pin +12V power connector, besides the 24-pin main power connector.3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 2026Internal I/O connectors: 1 x 24-pin Main Power, 1 x 8-pin +12V Power and 1 x 4-pin +12V Power connector.

Extra slot power connectoriA PCIe or other power connector on the board that feeds the expansion slots. The 24-pin and CPU connectors do not count. A connector the maker ties only to a front USB-C header does not count.

No1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Power Related row lists 1 x 8-pin PCIe Power connector. The page ties it to the front USB 20Gbps Type-C port: to support 60W the power cable must go to this connector, or only 27W is supported. It is not described as feeding the expansion slots, so it does not count.3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/ROG_CROSSHAIR_X870E_HERO/E27104_ROG_CROSSHAIR_X870E_HERO_EM_V5_WEB.pdfRead 15 October 2026Layout item 25 is the 8-pin PCIe Power Plug LED for PCIE_8PIN_PWR. The manual says nothing about slot power from it.

No1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 2026The internal connector list has no extra slot power connector.3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 2026The internal connector list has no extra slot power connector.

Memory

3 of 6 differ

Memory type

DDR51Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Memory row: 4 x DIMM slots, DDR5.

DDR41Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 20264 x DIMM, DDR4, un-buffered memory.3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 2026Specifications summary: 4 x DIMM, Max. 128GB, DDR4.

Memory slotsiDIMM slots on the board.

41Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Memory row: 4 x DIMM slots.

41Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 20264 x DIMM.3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 20264 x DIMM.

Max memoryiMaximum total capacity the maker states for the board. The maker's product page wins over an older manual, since a BIOS update can raise the value.

256GB1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Memory row: max. 256GB. Tom's Hardware and KitGuru list 192GB from the launch specification.

128GB1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 2026Max. 128GB.3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 2026Max. 128GB.

Max memory speed (overclocked)iHighest overclocked speed the maker lists for one module per channel, with the newest CPU family the board is sold for, e.g. Ryzen 9000 or Core Ultra 200S. Ryzen 8000 values are never used. The source note names the family and the other module setups. It is not the CPU's official speed. A JEDEC-only list such as 5600/4800 is not this value. When the maker lists a manual overclock and a memory profile speed, the higher one is stored. The maker's product page wins over an older manual, since a BIOS update can raise the value. A table that names the CPU family wins over a headline speed that names none.

8,200MT/s1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Memory row: up to 8200+MT/s (OC) with Ryzen 9000 Series Processors, 8600+ with Ryzen 8000 and 8000+ with Ryzen 7000. The Ryzen 9000 value is stored. The 8600 value is for Ryzen 8000 APUs. The page gives no table for other module setups.

5,100MT/s1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 2026The list for Ryzen 5000 and 3000 Series runs from 2133 to 4800(O.C.) MHz. The list for Ryzen 5000 and 4000 G-Series runs from 2133 to 5100(O.C) MHz. The highest overclocked speed is stored, which is the ROG overview's headline DDR4 5100MHz+. No module setup is named. Ryzen 5000 is the newest family.2Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-modelRead 15 October 2026The spec overview lists DDR4 5100MHz+ with dual channel.3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 2026Specifications summary: Ryzen 5000 and 3000 Series up to 4800(O.C.) MHz, and Ryzen 5000 and 4000 G-Series up to 5100(O.C) MHz. The higher figure is stored.

ECC memoryiThe board runs unbuffered ECC modules with ECC active. A board that runs ECC modules in non-ECC mode does not count. DDR5 on-die ECC does not count. A maker list of ECC and non-ECC unbuffered memory with no non-ECC mode qualifier counts as true, as on ASUS and ASRock AM5 boards. A note that ECC mode depends on the CPU, as ASUS writes for AM4 boards, still counts as true.

Yes1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Memory row: ECC and Non-ECC, Un-buffered Memory. The note says non-ECC DDR5 supports On-Die ECC, which does not count. The manual says ECC or non-ECC DDR5 DIMMs can be installed. The page does not say that ECC runs with ECC active.3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/ROG_CROSSHAIR_X870E_HERO/E27104_ROG_CROSSHAIR_X870E_HERO_EM_V5_WEB.pdfRead 15 October 2026Memory configurations: You may install ECC or Non-ECC DDR5 DIMMs into the DIMM sockets.

Yes1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 2026ECC memory (ECC mode) support varies by CPU. The maker lists no non-ECC mode qualifier for the board, so it counts as ECC.3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 2026ECC memory (ECC mode) support varies by CPU.

CUDIMM supportiThe board runs clocked unbuffered DIMMs (CUDIMM) with the clock driver active. Clock driver bypass mode only does not count. A plain "Supports CUDIMM" with no bypass limit, as ASRock and ASUS write it, counts as true.

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Expansion slots

2 of 3 differ

Expansion slotsiPhysical card slots. Storage M.2 slots are listed under Storage. The M.2 slot of a pre-installed Wi-Fi module is not listed. A full-length slot wired for x4 is PCIe x16 with 4 lanes.

AASUS ROG Crosshair X870E Hero

Physical slot	Electrical lanes	PCIe generation	Connected to	Count
PCIe x16	16	5	CPU	1
PCIe x16	8	5	CPU	1

Source1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Expansion Slots row for Ryzen 9000 and 7000: 2 x PCIe 5.0 x16 slots with Q-Release Slim (supports x16 or x8/x8 or x8/x4/x4 modes). With both slots in use each runs at x8. Tom's Hardware says both slots connect to the CPU, the top one at x16 or x8 and the bottom one at x8. Ryzen 8000 limits the slots to PCIe 4.0 and turns the second slot off.6Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Both reinforced PCIe slots are CPU-connected at PCIe 5.0. The top slot runs at x16 or x8 and the bottom slot runs at x8, or x4/x4 with some M.2 setups.

BASUS ROG STRIX B550-F GAMING WIFI II

Physical slot	Electrical lanes	PCIe generation	Connected to	Count
PCIe x16	16	4	CPU	1
PCIe x16	4	3	Chipset	1
PCIe x1	1	3	Chipset	3

Source1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 2026CPU: 1 x PCIe 4.0 x16 SafeSlot (supports x16 mode). B550 chipset: 1 x PCIe 3.0 x16 slot (supports x4 mode) and 3 x PCIe 3.0 x1 slots. The x16 slot shares bandwidth with the three x1 slots. Per the manual, the x1 slots are disabled when the x16 slot runs at x4, and the x16 slot runs at x1 when an x1 slot is used. The M.2 slots are in the Storage row.3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 2026Specifications summary and the shared bandwidth table: PCIEX16_2 shares bandwidth with PCIEX1_1, PCIEX1_2 and PCIEX1_3. When it runs x4, the three x1 slots are disabled.

Full-length PCIe slotsiCounts full-length slots, whatever their lane count.

2=CalculatedFrom Expansion slots

2=CalculatedFrom Expansion slots

Fastest PCIe x16 slot generationiHighest PCIe generation of a full-length slot. This is normally the graphics card slot.

5=CalculatedFrom Expansion slots

4=CalculatedFrom Expansion slots

Storage

4 of 4 differ

M.2 storage slotsiOne row per M key storage slot on the board, front or back. Slots on an included add-in card are not listed. Values are with the CPU family that gives the board its full connectivity. A slot listed for 25110 counts as M.2 22110. A slot listed for 2260 counts as M.2 2280.

AASUS ROG Crosshair X870E Hero

Slot	PCIe generation	PCIe lanes	Connected to	Longest drive	Takes SATA drives	Heatsink	Shares lanes with
M.2_1	5	4	CPU	M.2 2280	No	Yes	Not available
M.2_2	5	4	CPU	M.2 2280	No	Yes	PCIEX16_1 and PCIEX16_2. With M.2_2 in use and M.2_3 not, PCIEX16_1 runs at x8 and PCIEX16_2 is disabled
M.2_3	5	4	CPU	M.2 2280	No	Yes	PCIEX16_1 and PCIEX16_2. With M.2_3 in use and M.2_2 not, PCIEX16_1 runs at x8 and PCIEX16_2 runs at x4. With both in use, PCIEX16_1 runs at x8 and PCIEX16_2 is disabled
M.2_4	4	4	Chipset	M.2 2280	No	Yes	Not available
M.2_5	4	4	Chipset	M.2 2280	No	Yes	Not available

Source1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Storage row for Ryzen 9000 and 7000: M.2_1, M.2_2 and M.2_3 (CPU) support type 2242/2260/2280 at PCIe 5.0 x4. The AMD X870E chipset gives M.2_4 (2242/2260/2280) and M.2_5 (2280) at PCIe 4.0 x4. The lane sharing footnote is on M.2_2 and M.2_3. With Ryzen 8000 only M.2_1 works, at PCIe 4.0. The full slot list names no SATA mode. The page lists M.2 heatsinks and each of the three PCIe 5.0 slots has a backplate. The ASUS overview says heatsinks for five M.2 slots. A SlimSAS connector at PCIe 4.0 x4 is not an M.2 slot and is not listed.6Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026The top three M.2 sockets, M.2_1/2/3, are CPU-connected at PCIe 5.0 x4 and take up to 80 mm. The bottom two take up to 80 mm and connect through the chipset at PCIe 4.0 x4. M.2_2 and M.2_3 together turn off PCIEX16_2.13Spec databasemaxmybuild.com/motherboards/asus-rog-crosshair-x870e-heroRead 15 October 2026Lists a heatsink on all M.2 slots.

BASUS ROG STRIX B550-F GAMING WIFI II

Slot	PCIe generation	PCIe lanes	Connected to	Longest drive	Takes SATA drives	Heatsink	Shares lanes with
M.2_1	4	4	CPU	M.2 22110	Yes	Yes	Not available
M.2_2	3	4	Chipset	M.2 22110	Yes	Yes	SATA6G_5 and SATA6G_6 are disabled when M.2_2 is used

Source1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 2026CPU: M.2_1 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 4.0 x4 and SATA modes). B550 chipset: M.2_2 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 3.0 x4 and SATA modes). When M.2_2 is populated, SATA6G_5/6 ports are disabled. The Thermal Solution row lists an M.2 heatsink. The ROG overview says dual M.2 heatsinks, and the maker's product photo shows a heatsink over each slot.2Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-modelRead 15 October 2026The overview lists dual M.2 heatsinks and says both M.2 slots take up to type 22110.3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 2026Specifications summary and item 6 of the board overview: M.2_1 supports PCIe 4.0 x4 and SATA modes, M.2_2 supports PCIe 3.0 x4 and SATA modes, both for type 2242/2260/2280/22110. When M.2_2 is populated, SATA6G_5/6 are disabled. The installation section uses screws, with a bundled M.2 SSD screw package, so no screwless latch is listed.

M.2 slots

5=CalculatedFrom M.2 storage slots

2=CalculatedFrom M.2 storage slots

PCIe 5.0 M.2 slots

3=CalculatedFrom M.2 storage slots

0=CalculatedFrom M.2 storage slots

SATA portsiSATA 6Gb/s connectors on the board. SlimSAS connectors and M.2 slots that take SATA drives do not count.

41Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Storage row: 4 x SATA 6Gb/s ports. The SlimSAS connector is not counted.

61Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 20266 x SATA 6Gb/s ports. Supports RAID 0, 1, 10.3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 20266 x SATA 6Gb/s ports.

Rear ports

5 of 5 differ

Rear portsiPhysical connectors on the rear I/O panel. Wi-Fi antenna connectors and buttons are not ports. 3.5 mm audio counts analog jacks of any role. A video input, such as the DisplayPort In of a Thunderbolt board, is Other.

AASUS ROG Crosshair X870E Hero

Type	Version	Count	Max link rate (Gbps)	Thunderbolt or USB4	DP Alt Mode
USB-C	USB4	2	40	USB4	Yes
USB-C	USB 3.2 Gen 2	2	10	Not available	No
USB-A	USB 3.2 Gen 2	6	10	Not available	Not available
HDMI	HDMI 2.1	1	Not available	Not available	Not available
Ethernet (RJ45)	Not available	1	5	Not available	Not available
Ethernet (RJ45)	Not available	1	2.5	Not available	Not available
3.5 mm audio	Not available	2	Not available	Not available	Not available
Optical S/PDIF	Not available	1	Not available	Not available	Not available

Source1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Back Panel I/O Ports: 2 x USB4 (40Gbps) Type-C, 8 x USB 10Gbps (6 Type-A and 2 Type-C), 1 x HDMI, 1 x Intel 2.5Gb Ethernet, 1 x Realtek 5Gb Ethernet, 2 x gold-plated audio jacks, 1 x optical S/PDIF out, 1 x Wi-Fi module, the BIOS FlashBack button and the Clear CMOS button. HDMI supports 4K@60Hz as specified in HDMI 2.1. Only the 2 USB4 ports support USB Type-C display outputs (max 4K@60Hz as specified in DisplayPort 1.4a). The USB4 ports are not Thunderbolt, since ASUS writes USB4 only. The rear USB Type-C power output is not stated.

BASUS ROG STRIX B550-F GAMING WIFI II

Type	Version	Count	Max link rate (Gbps)
USB-C	USB 3.2 Gen 2	1	10
USB-A	USB 3.2 Gen 2	1	10
USB-A	USB 3.2 Gen 1	4	5
USB-A	USB 2.0	2	0.48
DisplayPort	DisplayPort 1.2	1	Not available
HDMI	HDMI 2.1	1	Not available
Ethernet (RJ45)	Not available	1	2.5
3.5 mm audio	Not available	5	Not available
Optical S/PDIF	Not available	1	Not available

Source1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 2026Back panel: 2 x USB 3.2 Gen 2 ports (1 Type-A and 1 USB Type-C), 4 x USB 3.2 Gen 1 Type-A, 2 x USB 2.0, 1 x Wi-Fi module, 1 x DisplayPort (1.2 in the Graphics row), 1 x HDMI, 1 x Intel I225-V 2.5G Ethernet, 1 x optical S/PDIF out, 5 x audio jacks and 1 x BIOS FlashBack button. The page writes HDMI without a version. The manual writes HDMI 2.1. Graphics specifications may vary between CPU types. No USB power output or video mode is stated for the Type-C port, so dp_alt_mode is left out.3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 2026Back Panel I/O Ports as on the spec page. The Graphics row says 1 x DisplayPort 1.2 and 1 x HDMI 2.1, and graphics specifications may vary between CPU types.5Retailer pagestartech.com.bd/asus-rog-strix-b550-f-gaming-wifi-ii-motherboardRead 15 October 2026The page copies ASUS's spec, with HDMI 2.1 and DisplayPort 1.2 in the Graphics row.6Retailer pageparadigit.ie/asus-rog-strix-b550-f-gaming-wifi-ii-amd-b550-socket-am4-atx/21175029/productRead 15 October 2026HDMI version 2.1 and DisplayPort version 1.2.

Rear USB ports

10=CalculatedFrom Rear ports

8=CalculatedFrom Rear ports

Rear USB-C portsiIncludes Thunderbolt and USB4 ports.

4=CalculatedFrom Rear ports

1=CalculatedFrom Rear ports

Fastest rear USB port

40Gbps=CalculatedFrom Rear ports

10Gbps=CalculatedFrom Rear ports

ThunderboltiThunderbolt on the rear panel. A header for an add-in card does not count.

No=CalculatedFrom Rear ports

Not available

Internal connectors

5 of 5 differ

Internal USB headersiHeaders for front-panel USB ports. The header count may be left out when the maker states only the front ports served.

AASUS ROG Crosshair X870E Hero

Header	Max data rate (Gbps)	Headers	Front ports served	Power out (W)
USB-C header	20	1	1	60
USB-C header	20	1	1	15
USB 3 header (19-pin)	5	2	4	Not available
USB 2.0 header (9-pin)	0.48	2	4	Not available

Source1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Internal USB: 1 x USB 20Gbps (Type-C, up to 60W PD/QC4+), 1 x USB 20Gbps connector (Type-C), 2 x USB 5Gbps headers for 4 ports and 2 x USB 2.0 headers for 4 ports. The 60 W needs the 8-pin PCIe power connector, or the port gives 27 W. The page also says USB Type-C power delivery output max. 5V/3A, stored as 15 W for the second Type-C connector.

BASUS ROG STRIX B550-F GAMING WIFI II

Header	Max data rate (Gbps)	Headers	Front ports served
USB 3 header (19-pin)	5	1	2
USB 2.0 header (9-pin)	0.48	2	4

Source1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 2026Internal I/O: 1 x USB 3.2 Gen 1 header supports 2 additional USB 3.2 Gen 1 ports and 2 x USB 2.0 headers support 4 additional USB 2.0 ports. No front USB-C header is listed.3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 20261 x USB 3.2 Gen 1 header for 2 ports and 2 x USB 2.0 headers for 4 ports.

Front USB-C header speed

20Gbps=CalculatedFrom Internal USB headers

Not available

Fan headersiAll fan and pump headers on the board, including CPU, CPU optional, AIO pump and chassis fan headers. Combination connectors that carry fan power together with other lines, such as MSI EZ Conn, do not count. A header that drives several fans, such as GIGABYTE 3_FANS, counts once. Headers on a hub that ships with the board and plugs into it, such as MSI's EZ CONTROL HUB, count. The source note splits board and hub.

81Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Fan and Cooling Related: 1 CPU, 1 CPU OPT, 1 AIO Pump, 4 chassis fan headers and 1 W_PUMP+ header, 8 in total. Tom's Hardware also counts 8.6Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec table: 8 four-pin fan and pump headers (CPU, CPUOPT, AIO Pump, Chassis, W_PUMP+).

61Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 20261 x 4-pin AIO_Pump header, 1 x 4-pin CPU fan header, 1 x 4-pin CPU_OPT fan header and 3 x 4-pin chassis fan headers.3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 2026The fan header table lists CPU_FAN, CPU_OPT, CHA_FAN1 to 3 and AIO_PUMP, each rated 1 A (12 W).

ARGB headersi3-pin 5 V addressable RGB headers. Combination connectors do not count. Headers on a hub that ships with the board and plugs into it, such as MSI's EZ CONTROL HUB, count. The source note splits board and hub.

31Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Miscellaneous: 3 x Addressable Gen2 headers.2Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-heroRead 15 October 2026Overview: 3 x 3-pin addressable Gen 2 RGB headers.

11Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 20261 x Addressable Gen 2 header (3-pin).3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 20261 x Addressable Gen 2 header.

RGB headersi4-pin 12 V RGB headers. Headers on a hub that ships with the board and plugs into it, such as MSI's EZ CONTROL HUB, count. The source note splits board and hub.

01Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026The complete internal connector list has no 4-pin 12 V RGB header, only 3 addressable Gen2 headers and an ARGB extension cable in the box.

21Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 20262 x AURA RGB headers (4-pin).3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 20262 x AURA RGB headers.

Networking

7 of 9 differ

Ethernet controllersiOne item per Ethernet chip, as maker plus chip family without suffix letters, e.g. Realtek RTL8126 or Realtek RTL8125. Suffixes and revisions go in the source note. Leave it empty when no maker document or review names the chip. A Killer chip is written with Intel as its maker, such as Intel Killer E3100G.

Realtek RTL8126, Intel I2261Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Ethernet row: 1 x Intel 2.5Gb Ethernet and 1 x Realtek 5Gb Ethernet. The chip names come from Tom's Hardware (Intel i-226 and Realtek 8126).6Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec table: Intel i-226 (2.5 GbE) and Realtek 8126 (5 GbE). Stored without suffix letters.8Reviewkitguru.net/components/motherboard/leo-waldock/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec list: Realtek 5Gbps and Intel 2.5Gbps Ethernet.

Intel I2251Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 20261 x Intel I225-V 2.5Gb Ethernet with ASUS LANGuard. The suffix V is left out.3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 20261 x Intel I225-V 2.5Gb Ethernet.6Retailer pageparadigit.ie/asus-rog-strix-b550-f-gaming-wifi-ii-amd-b550-socket-am4-atx/21175029/productRead 15 October 2026LAN controller: Intel I225-V.

Ethernet ports

2=CalculatedFrom Rear ports

1=CalculatedFrom Rear ports

Ethernet speediFastest Ethernet port.

5Gbps=CalculatedFrom Rear ports

2.5Gbps=CalculatedFrom Rear ports

Wi-Fi includediA Wi-Fi module comes installed. A board sold with and without Wi-Fi is two products.

Yes1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Wireless row: Wi-Fi 7 and 1 x Wi-Fi module on the back panel, with the Q-Antenna in the box.

Yes1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 2026The back panel lists a Wi-Fi module and the Wireless row lists Wi-Fi 6E with Bluetooth v5.2.3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 2026Wireless and Bluetooth: Wi-Fi 6E, 2x2, and 1 x ASUS Wi-Fi Module on the back panel.

Wi-Fi standard

Wi-Fi 71Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Wireless row: Wi-Fi 7, 2x2, 802.11be.6Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec table: Wi-Fi 7 2x2.

Wi-Fi 6E1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 20262x2 Wi-Fi 6E (802.11 a/b/g/n/ac/ax).3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 20262x2 Wi-Fi 6E (802.11 a/b/g/n/ac/ax).

Wi-Fi bandsiBands the installed module supports.

2.4 GHz, 5 GHz, 6 GHz1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Wireless row: supports 2.4/5/6GHz frequency band.

2.4 GHz, 5 GHz, 6 GHz1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 2026Supports 2.4/5/6GHz frequency band. The 6 GHz regulation may vary between countries and the function is ready in Windows 11 or later.3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 2026Supports 2.4/5/6GHz frequency band.

Max Wi-Fi channel widthiWidest channel the installed module supports, e.g. 320 or 160. It follows the Wi-Fi module, so a board revision can change it.

320MHz1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Wireless row: supports Wi-Fi 7 320MHz bandwidth.6Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec table: 320 MHz.

Not available

Wi-Fi moduleiChip as published. A board revision can change the chip. One name: the maker's when published, otherwise the one name a review uses. No parentheses. Other names go in the source note. Use the chip's part number with its maker when any source gives it, such as Qualcomm QCNCM865 for a module also written NCM865. A platform name such as FastConnect 7800 is used only when no part number is published.

MediaTek MT79271Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Wireless row: Wi-Fi 7 (Qualcomm QCNCM865 or MediaTek MT7927). The actual module may vary, so see the label on the product. The reviewed boards had the MediaTek MT7927, so it is the base value.8Reviewkitguru.net/components/motherboard/leo-waldock/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec list: Wireless: MediaTek MT7927 Wi-Fi 7, Bluetooth 5.4.

Not available

BluetoothiVersion of the Bluetooth radio on the Wi-Fi module.

5.41Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Wireless row: Bluetooth v5.4. The Bluetooth version may vary with the Wi-Fi module.6Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec table: BT 5.4.

5.21Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 2026Bluetooth v5.2.3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 2026Bluetooth v5.2.6Retailer pageparadigit.ie/asus-rog-strix-b550-f-gaming-wifi-ii-amd-b550-socket-am4-atx/21175029/productRead 15 October 2026Bluetooth version 5.2.

Audio

2 of 2 differ

Audio codeciMaker and model, e.g. Realtek ALC4080. A board revision can change the codec.

Realtek ALC40821Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Audio row: ROG SupremeFX 7.1 Surround Sound High Definition Audio CODEC ALC4082. The codec is a Realtek part (Tom's Hardware: Realtek ALC4082).6Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec table: Realtek ALC4082 w/ESS Sabre9219 DAC.

SupremeFX S1220A1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 2026ROG SupremeFX 7.1-Channel High Definition Audio CODEC S1220A, with 120 dB SNR playback and 113 dB SNR recording. The maker names no chip maker. Stored as the maker writes it.3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 2026ROG SupremeFX 7.1-Channel High Definition Audio CODEC S1220A.

DAC chipiA separate DAC chip next to the codec, e.g. ESS ES9219. Maker plus part number as the maker writes it, with suffix letters, e.g. ESS ES9219Q. A marketing name that stands for a part number is written as the part number, so ESS SABRE9219 is ESS ES9219 and the maker wording goes in the source note. Leave it empty on boards with only a codec.

ESS ES92191Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Audio features: ESS ES9219 QUAD DAC.6Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec table: ESS Sabre9219. ASUS names it ESS ES9219.

Not available

Features

4 of 7 differ

BIOS flashbackiA button that updates the BIOS from a USB drive without a CPU or memory installed. Maker names include BIOS FlashBack, Flash BIOS Button and Q-Flash Plus.

Yes1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Back Panel I/O Ports: 1 x BIOS FlashBack button.

Yes1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 2026Back panel: 1 x BIOS FlashBack button. Special features: BIOS FlashBack button and LED.3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 2026Back panel I/O lists 1 x BIOS FlashBack button.

Clear CMOS button (rear)iA button on the rear panel that resets the BIOS settings. A jumper or header does not count. A board whose only clear CMOS button sits on the board itself is false.

Yes1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Back Panel I/O Ports: 1 x Clear CMOS button.

No1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 2026Internal I/O: 1 x Clear CMOS header. The back panel list has only the BIOS FlashBack button.3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 2026The back panel list has no clear CMOS button. The internal list has a Clear CMOS header.

POST code displayiA two-digit display that shows boot codes, e.g. ASUS Q-Code or ASRock Dr. Debug. Single status LEDs do not count. Taken from the maker's spec or manual only. A review spec table is not enough.

Yes1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026ASUS Q-Design lists Q-Code and Q-LED (CPU, DRAM, VGA, Boot Device). The manual's layout lists a Q-Code LED that shows a 2-digit error code.3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/ROG_CROSSHAIR_X870E_HERO/E27104_ROG_CROSSHAIR_X870E_HERO_EM_V5_WEB.pdfRead 15 October 2026Layout item 21, Q-Code LED: a 2-digit error code that displays the system status.6Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec table: Diagnostics Panel with Q-Code and Q-LED.

No1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 2026Q-Design lists Q-LED with four status LEDs (DRAM, CPU, VGA and boot device). No two-digit display is listed.3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 2026ASUS Q-LED with four LEDs (DRAM, CPU, VGA, boot device). No Q-Code display.

Power button on the boardiA power or start button on the board itself, for use outside a case. A button with another label counts when the maker says it can turn the PC on, such as GIGABYTE's quick button labelled RESET. A button on the rear I/O panel counts. A button on a module that ships fitted to the board, such as MSI's EZ BRIDGE, counts.

Yes1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Miscellaneous and Extreme OC Kit: 1 x Start button. The manual says it powers up the system or puts it to sleep or soft-off.3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/ROG_CROSSHAIR_X870E_HERO/E27104_ROG_CROSSHAIR_X870E_HERO_EM_V5_WEB.pdfRead 15 October 2026Layout item 19, Start button: press it to power up the system, or put the system into sleep or soft-off mode.6Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec table: internal buttons are Start, Flex, Retry and an alternate PCIe mode switch.

No1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 2026The internal connector and special feature lists have no onboard power or reset button.

Dual BIOSiTwo BIOS chips, so the board can start from the second chip after a failed update. Two flash chips alone do not count.

No1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026BIOS row: 256Mb Flash ROM, UEFI AMI BIOS. Dual BIOS is not stated.

No1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 2026BIOS: 256 Mb Flash ROM, UEFI AMI BIOS. Dual BIOS is not stated.3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 2026256 Mb Flash ROM. Dual BIOS is not stated.

Pre-installed I/O shieldiThe rear I/O shield is fixed to the board.

Yes1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026ASUS EZ DIY lists a pre-mounted I/O shield.

Yes1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 2026ASUS EZ DIY lists a pre-mounted I/O shield.2Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-modelRead 15 October 2026The patented I/O shield comes pre-mounted.3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 2026Special features, ASUS EZ DIY: Pre-mounted I/O shield.

Tool-free featuresiM.2 latch holds a drive without a screw. M.2 heatsink comes off without a tool. PCIe slot release is a button or lever that frees the graphics card. Push-on antenna connector fits the Wi-Fi antenna without screwing.

Tool-free M.2 latch, Tool-free M.2 heatsink, PCIe slot release, Push-on antenna connector1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026ASUS Q-Design: M.2 Q-Latch (tool-free SSD latch), M.2 Q-Release (removes the M.2 heatsink without screws), M.2 Q-Slide, Q-Release Slim (PCIe slot release, with SafeSlot) and Q-Antenna (the antenna snaps into place).2Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-heroRead 15 October 2026Overview: Q-Release for the M.2 heatsink (a switch frees it), the new M.2 Q-Latch, PCIe Slot Q-Release Slim and Q-Antenna are described.6Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026The review describes the Q-Release Slim PCIe slot, which releases the card without a button.

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Measured

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VRM temperature under CPU loadiHighest VRM temperature a reviewer measured during a sustained all-core CPU stress test at stock settings. Compare only results from the same reviewer and CPU. The reviewer's probe reading when given, otherwise the board sensor. The sensor and the CPU package power during the test go in the source note.

46°C7Measurementtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-review/3Read 15 October 2026CPU at stock, AIDA64 stress test on all threads for 30 minutes, about 24 C ambient. The test system on page 2 is a Ryzen 9 9900X with an Arctic Liquid Freezer II 420. The CPU drew about 145 W. The review text says the VRM peaked just under 46 C, and the sentence names the Taichi, which looks like a copied word. The chart for this board shows thermocouple 1 at about 45.8 C after 30 minutes. The HWiNFO VRM sensor line is higher at about 47 C. The probe reading is stored, rounded to 46. The exact value is not printed.

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Power draw idleiWhole test system at the wall at idle, measured by a reviewer. Compare only results from the same reviewer and CPU. A chart of CPU and board power without a wall meter does not count.

103W7Measurementtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-review/3Read 15 October 2026Whole test system idle at the wall with a Kill-A-Watt meter, Windows Balanced power plan, a Ryzen 9 9900X system. Chart and text: idle 103 W.

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Power draw CPU stressiWhole test system at the wall at the peak of a CPU stress test, measured by a reviewer. The graphics card is not loaded. Compare only results from the same reviewer and CPU. A chart of CPU and board power without a wall meter does not count.

245W7Measurementtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-review/3Read 15 October 2026Peak of the whole test system at the wall (Kill-A-Watt) during the AIDA64 System Stability Test with Stress CPU, FPU, Cache and Memory enabled. The graphics card was not stressed. Stock settings. Chart and text: load 245 W, with the CPU using around 145 W.

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In the box

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In the boxiItems as the maker lists them.

1 x ARGB RGB extension cable, 4 x SATA 6Gb/s cables, 1 x ASUS WiFi Q-Antenna, 1 x Q-connector, 2 x M.2 Q-Latch package, 3 x M.2 Q-Slide package, 5 x M.2 rubber package, 1 x ROG stickers, 1 x ROG thank you card, 1 x ROG Bottle Opener, 1 x USB drive with utilities and drivers, 1 x Quick start guide1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026Accessories row: cables, miscellaneous, installation media and documentation, as listed.

1 x Addressable RGB extension cable, 4 x SATA 6Gb/s cables, 1 x ASUS Wi-Fi moving antennas, 1 x Cable ties pack, 1 x M.2 Rubber Package, 1 x M.2 SSD screw package, 1 x ROG key chain, 1 x ROG Strix stickers, 1 x ROG Strix thank you card, 1 x Support DVD, 1 x User manual1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 2026Accessories list as published.3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 2026Package contents, chapter 1.

Links

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Product page

rog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026The maker's product page, features tab.

rog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model2Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-modelRead 15 October 2026ASUS ROG product page for the ROG STRIX B550-F GAMING WIFI II.

Spec sheet

rog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/spec1Maker product pagerog.asus.com/motherboards/rog-crosshair/rog-crosshair-x870e-hero/specRead 15 October 2026The maker's Tech Specs tab, read on 2026-10-15.

rog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/spec1Maker product pagerog.asus.com/motherboards/rog-strix/rog-strix-b550-f-gaming-wifi-ii-model/specRead 15 October 2026ASUS ROG Tech Specs tab for the ROG STRIX B550-F GAMING WIFI II. Read on 2026-10-15.

Manual

dlcdnets.asus.com/pub/ASUS/mb/SocketAM5/ROG_CROSSHAIR_X870E_HERO/E27104_ROG_CROSSHAIR_X870E_HERO_EM_V5_WEB.pdf3Owner's manualdlcdnets.asus.com/pub/ASUS/mb/SocketAM5/ROG_CROSSHAIR_X870E_HERO/E27104_ROG_CROSSHAIR_X870E_HERO_EM_V5_WEB.pdfRead 15 October 2026ASUS user's manual E27104 (EM V5), English edition, found through the ASUS support API manual list for this model. It also covers the model number in its title.

doc.moyo.ua/13113185_1666793471.pdf3Owner's manualdoc.moyo.ua/13113185_1666793471.pdfRead 15 October 2026ASUS user manual E18592, First Edition, August 2021, 72 pages, in a copy on doc.moyo.ua. ASUS's own download link was not found. The copy matches the ASUS spec page.

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

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Warranty

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Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

3years6Reviewtomshardware.com/pc-components/motherboards/asus-rog-crosshair-x870e-hero-reviewRead 15 October 2026Spec table: Warranty 3 Years. The review is a US review.10Retailer pagearvutitark.ee/en/pc-components/motherboards/asus-rog-crosshair-x870e-hero-amd-x870e-socket-am5-atx-1402616Read 15 October 2026The listing gives Warranty (months) 36 in Estonia.

3years5Retailer pagestartech.com.bd/asus-rog-strix-b550-f-gaming-wifi-ii-motherboardRead 15 October 2026Warranty information: 3 years manufacturing warranty. The market is Bangladesh.

Both are also in the API. Back to all motherboards.