PC parts / Motherboards
ASRockMainstream motherboard
B860 Pro-A WiFi
Released January 2025.3Spec databasegeizhals.at/asrock-b860-pro-a-wifi-90-mxbrl-a0uayz-a3389994.htmlRead 15 October 2026Geizhals lists the board since 2025-01-19, the first retail listing. Its manual files are dated 2025-01-19. The manual itself is dated December 2024. The B860 chipset boards launched in January 2025. The month is approximate. Last checked 15 October 2026.
- CPU socket
- LGA1851
- Chipset
- Intel B860
- Form factor
- ATX
- M.2 slots
- 3
59 of 78 fields known.
At a glance
Ports
- DisplayPort 1.4
- HDMI 2.1
- USB-C USB 3.2 Gen 2x2
- 6 USB-A USB 3.2 Gen 1
- 2 USB-A USB 2.0
- Ethernet (RJ45)
- 3 3.5 mm audio
- USB-C header
- USB 3 header (19-pin)
- 2 USB 2.0 header (9-pin)
General
- Model numbers
- B860 Pro-A WiFi, 90-MXBRL0-A0UAYZ1Owner's manualdownload.asrock.com/Manual/B860%20Pro-A%20WiFi.pdfRead 15 October 2026Manual cover: B860 Pro-A WiFi. The part number 90-MXBRL0-A0UAYZ comes from the Paradigit and hinta.fi listings.4Spec databasehinta.fi/5130022/asrock-b860-pro-a-wifi/tuotetiedotRead 15 October 2026Manufacturer codes 90-MXBRL-A0UAYZ and 90-MXBRL0-A0UAYZ. The code with the 0 matches Paradigit and Geizhals.7Retailer pageparadigit.ie/asrock-b860-pro-a-wifi/21862542/productRead 15 October 2026Product number manufacturer 90-MXBRL0-A0UAYZ.
- GTIN / EAN
- 47115814902534Spec databasehinta.fi/5130022/asrock-b860-pro-a-wifi/tuotetiedotRead 15 October 2026The product data lists GTIN/EAN 4711581490253 for the B860 Pro-A WiFi. Komputronik gives the same EAN.5Retailer pagekomputronik.pl/product/954947/plyta-glowna-asrock-b860-pro-a-wifi.htmlRead 15 October 2026The listing gives EAN 4711581490253 and the producer code B860 Pro-A WiFi.
- Announced
- Not available
- Predecessor
- Not available
- Successor
- Not available
- Launch price (US)
- Not available
- Launch price (EU)
- Not available
- Markets
- Not available
- Colours
- Not available
- Board revision
- Not available
Platform
- Chipset
- Intel B8601Owner's manualdownload.asrock.com/Manual/B860%20Pro-A%20WiFi.pdfRead 15 October 2026Section 1.2 Chipset row: Intel B860.
- Supported processors
- Intel Core Ultra (Series 2)1Owner's manualdownload.asrock.com/Manual/B860%20Pro-A%20WiFi.pdfRead 15 October 2026Section 1.2 CPU row: Supports Intel Core Ultra Processors (Series 2) (LGA1851). Paradigit's Icecat copy also says Series 1, which the maker does not. LGA1851 is a Series 2 socket. Read on 2026-10-15.2Retailer pagedirectcomputers.co.uk/collections/intel-motherboards/products/asrock-b860-pro-a-wifi-intel-1851-socket-motherboard-atx-4x-ddr5-slots-3x-m-2-sockets-2x-usb-c-port-2-5gbe-lan-wi-fi-6e-1x-displayport-1x-hdmi-portRead 15 October 2026The copy of the maker's spec reads Supports Intel Core Ultra Processors (Series 2) (LGA1851).
- CPU overclocking
- No8Reviewmedcom.id/teknologi/review/GNl1M9Bb-asrock-b860-pro-a-wifi-ekonomis-untuk-intel-arrow-lakeRead 15 October 2026The review lists no CPU overclocking as a minus point.9Press articlepugetsystems.com/labs/articles/z890-vs-b860-vs-h810Read 15 October 2026The chipset table lists Overclocking for B860 as RAM only, and the text says the B860 chipset only supports memory overclocking. This is the chipset maker's feature as Puget reports it. It is not a board spec.
Board
Front and side, drawn to scale.
- Board dimensions
- Width244Height305mm(9.6 × 12 in)2Retailer pagedirectcomputers.co.uk/collections/intel-motherboards/products/asrock-b860-pro-a-wifi-intel-1851-socket-motherboard-atx-4x-ddr5-slots-3x-m-2-sockets-2x-usb-c-port-2-5gbe-lan-wi-fi-6e-1x-displayport-1x-hdmi-portRead 15 October 2026The copy of the maker's Platform row reads ATX Form Factor: 12.0-in x 9.6-in, 30.5 cm x 24.4 cm, stored as 244 mm wide and 305 mm high. Paradigit's Icecat copy lists 305 x 244 mm.
- PCB layers
- Not available
- Back-connect design
- No1Owner's manualdownload.asrock.com/Manual/B860%20Pro-A%20WiFi.pdfRead 15 October 2026The section 1.3 layout shows the usual front-side power, fan and USB connectors.
- RGB lighting on the board
- Not available
Power delivery
- Power stage layout
- 10+1+1+1+12Retailer pagedirectcomputers.co.uk/collections/intel-motherboards/products/asrock-b860-pro-a-wifi-intel-1851-socket-motherboard-atx-4x-ddr5-slots-3x-m-2-sockets-2x-usb-c-port-2-5gbe-lan-wi-fi-6e-1x-displayport-1x-hdmi-portRead 15 October 2026The page copies the maker's Key Features: 10+1+1+1+1 Power Phase, Dr.MOS for VCore+GT+SA. The maker's overview heading says 10 + 1 + 1 Power Phase Design + Dr.MOS. The first number is the same.8Reviewmedcom.id/teknologi/review/GNl1M9Bb-asrock-b860-pro-a-wifi-ekonomis-untuk-intel-arrow-lakeRead 15 October 2026The review says 10+1+1+1+1 with Dr.MOS for VCore, GT and SA.
- Vcore power stage rating
- Not available
- VRM controller
- Richtek RT3638AJ3Spec databasegeizhals.at/asrock-b860-pro-a-wifi-90-mxbrl-a0uayz-a3389994.htmlRead 15 October 2026The PWM controller row reads RT3638AJ (max. 10 phases). The Richtek maker name is added from the RT part prefix. No review or maker document names the controller.
- CPU power connectors
- 8+8 pin1Owner's manualdownload.asrock.com/Manual/B860%20Pro-A%20WiFi.pdfRead 15 October 2026Section 1.2 Connector row: 2 x 8 pin 12V Power Connectors (Hi-Density Power Connector).8Reviewmedcom.id/teknologi/review/GNl1M9Bb-asrock-b860-pro-a-wifi-ekonomis-untuk-intel-arrow-lakeRead 15 October 2026The review says dual 8-pin EPS 12V Hi-Density connectors.
Memory
- Max memory speed (overclocked)
- 8,666MT/s1Owner's manualdownload.asrock.com/Manual/B860%20Pro-A%20WiFi.pdfRead 15 October 2026Section 1.2 Memory row: non-ECC, un-buffered memory up to 8666+(OC). Intel Core Ultra (Series 2) is the only CPU family of the board. The maker's page copy on Direct Computers gives 8666+ MHz (OC) for one single-rank module per channel (1DPC 1R) and 6800+ for 1DPC 2R. So 8666 is stored.2Retailer pagedirectcomputers.co.uk/collections/intel-motherboards/products/asrock-b860-pro-a-wifi-intel-1851-socket-motherboard-atx-4x-ddr5-slots-3x-m-2-sockets-2x-usb-c-port-2-5gbe-lan-wi-fi-6e-1x-displayport-1x-hdmi-portRead 15 October 2026The copy of the maker's memory table reads 1DPC 1R up to 8666+ MHz (OC), 5600 MHz natively. The listing's overview says up to 8666+ (OC).
- CUDIMM support
- Yes1Owner's manualdownload.asrock.com/Manual/B860%20Pro-A%20WiFi.pdfRead 15 October 2026Section 1.2 Memory row: Supports Clocked Unbuffered DIMM (CUDIMM). The text does not mention a clock driver bypass mode.2Retailer pagedirectcomputers.co.uk/collections/intel-motherboards/products/asrock-b860-pro-a-wifi-intel-1851-socket-motherboard-atx-4x-ddr5-slots-3x-m-2-sockets-2x-usb-c-port-2-5gbe-lan-wi-fi-6e-1x-displayport-1x-hdmi-portRead 15 October 2026The copy of the maker's spec reads Supports Clocked Unbuffered DIMM (CUDIMM).
Expansion slots
- Expansion slots
Physical slot Electrical lanes PCIe generation Connected to Count PCIe x16 16 5 CPU 1 PCIe x16 4 4 Chipset 1 - Full-length PCIe slots
- 2
- Fastest PCIe x16 slot generation
- 5
Storage
- M.2 storage slots
Slot PCIe generation PCIe lanes Connected to Longest drive Takes SATA drives Heatsink M2_1 5 4 CPU M.2 2280 No Yes M2_2 4 4 Chipset M.2 2280 No No M2_3 4 4 Chipset M.2 2280 No No Source1Owner's manualdownload.asrock.com/Manual/B860%20Pro-A%20WiFi.pdfRead 15 October 2026Section 1.2 Storage row: M2_1 (Blazing M.2, CPU) takes 2280 at PCIe Gen5x4. M2_2 (Hyper M.2, chipset) takes 2230/2242/2260/2280 at PCIe Gen4x4. M2_3 (Hyper M.2, chipset) takes 2280 at PCIe Gen4x4. The full list names no SATA mode for the slots. The section 2.17 install guide shows a heatsink to remove on M2_1. Sections 2.18 and 2.19 show none. The manual states no lane sharing.8Reviewmedcom.id/teknologi/review/GNl1M9Bb-asrock-b860-pro-a-wifi-ekonomis-untuk-intel-arrow-lakeRead 15 October 2026Review of 2026-06-11: the bundled M.2 heatsink is only on the main slot. The other two M.2 slots have none.10Spec databasemaxmybuild.com/motherboards/asrock-b860-pro-a-wifiRead 15 October 2026Lists a heatsink on slot 1 only, with 1 PCIe 5.0 x4 and 2 PCIe 4.0 x4 M.2 slots.- M.2 slots
- 3
- PCIe 5.0 M.2 slots
- 1
Rear ports
- Rear ports
Type Version Count Max link rate (Gbps) DP Alt Mode DisplayPort DisplayPort 1.4 1 Not available Not available HDMI HDMI 2.1 1 Not available Not available USB-C USB 3.2 Gen 2x2 1 20 No USB-A USB 3.2 Gen 1 6 5 Not available USB-A USB 2.0 2 0.48 Not available Ethernet (RJ45) Not available 1 2.5 Not available 3.5 mm audio Not available 3 Not available Not available - Rear USB ports
- 9
- Rear USB-C ports
- 1
- Fastest rear USB port
- 20Gbps
- Thunderbolt
- Not available
Internal connectors
- Internal USB headers
Header Max data rate (Gbps) Headers Front ports served USB-C header 5 1 1 USB 3 header (19-pin) 5 1 2 USB 2.0 header (9-pin) 0.48 2 4 - Front USB-C header speed
- 5Gbps
- Fan headers
- 71Owner's manualdownload.asrock.com/Manual/B860%20Pro-A%20WiFi.pdfRead 15 October 2026Section 1.2 Connector row: 2 CPU fan connectors, 4 chassis fan connectors and 1 AIO pump fan connector.3Spec databasegeizhals.at/asrock-b860-pro-a-wifi-90-mxbrl-a0uayz-a3389994.htmlRead 15 October 2026Cooling row: 2x CPU fan, 1x AIO pump and 4x fan, all 4-pin PWM.10Spec databasemaxmybuild.com/motherboards/asrock-b860-pro-a-wifiRead 15 October 2026Lists 7 fan headers.
Networking
- Ethernet controllers
- Realtek RTL81251Owner's manualdownload.asrock.com/Manual/B860%20Pro-A%20WiFi.pdfRead 15 October 2026Section 1.2 LAN row: Dragon RTL8125BG, 2.5 Gigabit LAN. The suffix letters are left out.3Spec databasegeizhals.at/asrock-b860-pro-a-wifi-90-mxbrl-a0uayz-a3389994.htmlRead 15 October 2026Network row: Realtek RTL8125BG (2.5 Gb/s).7Retailer pageparadigit.ie/asrock-b860-pro-a-wifi/21862542/productRead 15 October 2026LAN controller: Dragon RTL8125BG.
- Ethernet ports
- 1
- Ethernet speed
- 2.5Gbps
- Wi-Fi standard
- Wi-Fi 6E1Owner's manualdownload.asrock.com/Manual/B860%20Pro-A%20WiFi.pdfRead 15 October 2026Section 1.2 Wireless LAN row: 802.11axe Wi-Fi 6E Module, IEEE 802.11a/b/g/n/ac/ax/axe.
- Wi-Fi bands
- 2.4 GHz, 5 GHz, 6 GHz1Owner's manualdownload.asrock.com/Manual/B860%20Pro-A%20WiFi.pdfRead 15 October 2026Section 1.2: dual-band 2x2 with extended 6GHz band support. A 6GHz router is needed for 6E and Windows 11 only.
- Max Wi-Fi channel width
- Not available
- Wi-Fi module
- Not available
Audio
- Audio codec
- Realtek ALC8971Owner's manualdownload.asrock.com/Manual/B860%20Pro-A%20WiFi.pdfRead 15 October 2026Section 1.2 Audio row: 7.1 CH HD Audio (Realtek ALC897 Audio Codec).3Spec databasegeizhals.at/asrock-b860-pro-a-wifi-90-mxbrl-a0uayz-a3389994.htmlRead 15 October 2026Audio row: Realtek ALC897.7Retailer pageparadigit.ie/asrock-b860-pro-a-wifi/21862542/productRead 15 October 2026The spec table (an Icecat copy) lists Audio chip: Realtek ALC897.
- DAC chip
- Not available
Features
- Clear CMOS button (rear)
- No1Owner's manualdownload.asrock.com/Manual/B860%20Pro-A%20WiFi.pdfRead 15 October 2026The rear panel list has no button. Clear CMOS is a jumper (CLRMOS1, section 2.12).
- POST code display
- No1Owner's manualdownload.asrock.com/Manual/B860%20Pro-A%20WiFi.pdfRead 15 October 2026Section 2.14: the Post Status Checker is four LEDs for CPU, DRAM, VGA and BOOT, and not a two-digit display.10Spec databasemaxmybuild.com/motherboards/asrock-b860-pro-a-wifiRead 15 October 2026Diagnostics: Debug LEDs, not a two-digit display.
- Power button on the board
- No1Owner's manualdownload.asrock.com/Manual/B860%20Pro-A%20WiFi.pdfRead 15 October 2026Section 2.15: the motherboard has one smart button, the BIOS Flashback button. The board has no power button.
- Pre-installed I/O shield
- No1Owner's manualdownload.asrock.com/Manual/B860%20Pro-A%20WiFi.pdfRead 15 October 2026Section 1.1 package contents list 1 x I/O Shield and section 2.5 explains installing it.8Reviewmedcom.id/teknologi/review/GNl1M9Bb-asrock-b860-pro-a-wifi-ekonomis-untuk-intel-arrow-lakeRead 15 October 2026The review lists a separate I/O shield as a minus point.
Measured
We could not find any of these 3 fields. Show them
- VRM temperature under CPU load
- Not available
- Power draw idle
- Not available
- Power draw CPU stress
- Not available
In the box
- In the box
- I/O Shield, 2 x Serial ATA (SATA) Data Cables, 2 x ASRock WiFi 2.4/5/6 GHz Antennas1Owner's manualdownload.asrock.com/Manual/B860%20Pro-A%20WiFi.pdfRead 15 October 2026Section 1.1 package contents. The SATA cables and antennas are marked Optional in the manual. The one M.2 screw is for the B860 Pro-A only.2Retailer pagedirectcomputers.co.uk/collections/intel-motherboards/products/asrock-b860-pro-a-wifi-intel-1851-socket-motherboard-atx-4x-ddr5-slots-3x-m-2-sockets-2x-usb-c-port-2-5gbe-lan-wi-fi-6e-1x-displayport-1x-hdmi-portRead 15 October 2026Accessories: 1 x I/O Shield, 2 x SATA Data Cables and 2 x ASRock WiFi 2.4/5/6 GHz Antennas.
Links
- Product page
- www.asrock.com/MB/Intel/B860%20Pro-A%20WiFi/index.asp11Maker product pageasrock.com/MB/Intel/B860%20Pro-A%20WiFi/index.aspRead 15 October 2026The maker's product page. asrock.com returned a bot check page, so it was not opened. The link is from the job's evidence.
- Spec sheet
- www.asrock.com/MB/Intel/B860%20Pro-A%20WiFi/Specification/index.asp11Maker product pageasrock.com/MB/Intel/B860%20Pro-A%20WiFi/index.aspRead 15 October 2026The maker's specification tab at the same address. It was not opened. The Direct Computers copy and the manual state the same specifications.
- Manual
- download.asrock.com/Manual/B860%20Pro-A%20WiFi.pdf1Owner's manualdownload.asrock.com/Manual/B860%20Pro-A%20WiFi.pdfRead 15 October 2026ASRock manual for the B860 Pro-A WiFi and the B860 Pro-A, Version 1.0, published December 2024, 70 pages. Items marked for the B860 Pro-A WiFi are used.
- EPREL registration number
- Not available
Warranty
- Manufacturer warranty (source market)
- 3years6Retailer pagearvutitark.ee/en/pc-components/motherboards/asrock-b860-pro-a-wifi-lga1851-mb-1427200Read 15 October 2026The listing gives Warranty (months) 36 in Estonia.
Compare with
Pick a motherboard to see both side by side. Differences are marked yellow.
Sources
We read 11 sources for this motherboard. The numbers match the markers in the sheet.
- Owner's manualdownload.asrock.com/Manual/B860%20Pro-A%20WiFi.pdf
- Spec databasehinta.fi/5130022/asrock-b860-pro-a-wifi/tuotetiedot
- Retailer pageparadigit.ie/asrock-b860-pro-a-wifi/21862542/product
- Press articlepugetsystems.com/labs/articles/z890-vs-b860-vs-h810
- Spec databasemaxmybuild.com/motherboards/asrock-b860-pro-a-wifi
- Maker product pageasrock.com/MB/Intel/B860%20Pro-A%20WiFi/index.asp
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