{"data":{"slug":"asrock-b850-pro-rs-wifi","type":"motherboard","brand":"ASRock","name":"B850 Pro RS WiFi","aliases":["B850 PRO RS WIFI","B850 Pro RS Wi-Fi","ASRock B850 Pro RS WiFi"],"release_date":"2025-01","url":"https://arkivo.dev/motherboards/asrock-b850-pro-rs-wifi","specs":{"series":"Pro","model_numbers":["B850 Pro RS WiFi","90-MXBQL0-A0UAYZ"],"gtins":["4711581490178"],"announce_date":null,"status":"available","predecessor":null,"successor":null,"launch_price_usd":189.99,"launch_price_eur":null,"markets":null,"colors":null,"manufacturer_url":"https://www.asrock.com/mb/AMD/B850%20Pro%20RS%20WiFi/index.asp","spec_sheet_url":null,"manual_url":"https://download.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdf","eprel_registration_number":null,"warranty_years":3,"segment":"mainstream","board_revision":null,"cpu_socket":"AM5","motherboard_chipset":"AMD B850","supported_cpu_series":["AMD Ryzen 9000 Series","AMD Ryzen 8000 Series","AMD Ryzen 7000 Series"],"cpu_overclocking":true,"motherboard_form_factor":"atx","dimensions_mm":{"width_mm":244,"height_mm":305},"pcb_layers":8,"back_connect_design":false,"rgb_lighting":true,"vrm_layout":"14+2+1","vrm_vcore_power_stages":14,"vrm_vcore_stage_rating_a":80,"vrm_controller":null,"cpu_power_connectors":"8+8 pin","supplemental_pcie_power":false,"ram_type":"ddr5","ram_slot_count":4,"ram_max_gb":256,"ram_max_speed_mts":8000,"ram_ecc":true,"cudimm_support":null,"expansion_slots":[{"slot_type":"pcie_x16","electrical_lanes":16,"pcie_gen":5,"connected_to":"cpu","count":1},{"slot_type":"pcie_x16","electrical_lanes":4,"pcie_gen":4,"connected_to":"chipset","count":1}],"pcie_x16_slot_count":2,"pcie_x16_gen_max":5,"m2_slots":[{"slot":"M2_1","pcie_gen":5,"pcie_lanes":4,"connected_to":"cpu","form_factor":"m2_2280","sata":false,"heatsink":true,"shares_lanes_with":null},{"slot":"M2_2","pcie_gen":4,"pcie_lanes":4,"connected_to":"cpu","form_factor":"m2_2280","sata":false,"heatsink":false,"shares_lanes_with":null},{"slot":"M2_3","pcie_gen":4,"pcie_lanes":4,"connected_to":"chipset","form_factor":"m2_2280","sata":false,"heatsink":true,"shares_lanes_with":"PCIE2 is disabled when M2_3 is used"},{"slot":"M2_4","pcie_gen":3,"pcie_lanes":4,"connected_to":"chipset","form_factor":"m2_2280","sata":false,"heatsink":true,"shares_lanes_with":"M2_4 runs at PCIe 3.0 x2 when SATA3_1 or SATA3_2 is used"}],"m2_slot_count":4,"m2_pcie5_slot_count":1,"sata_port_count":4,"rear_ports":[{"type":"usb_c","version":"USB 3.2 Gen 2","count":1,"max_gbps":10,"tb_usb4":null,"power_out_w":null,"dp_alt_mode":null},{"type":"usb_c","version":"USB 3.2 Gen 1","count":1,"max_gbps":5,"tb_usb4":null,"power_out_w":null,"dp_alt_mode":true},{"type":"usb_a","version":"USB 3.2 Gen 1","count":4,"max_gbps":5,"tb_usb4":null,"power_out_w":null,"dp_alt_mode":null},{"type":"usb_a","version":"USB 2.0","count":6,"max_gbps":0.48,"tb_usb4":null,"power_out_w":null,"dp_alt_mode":null},{"type":"hdmi","version":"HDMI 2.1","count":1,"max_gbps":null,"tb_usb4":null,"power_out_w":null,"dp_alt_mode":null},{"type":"rj45","version":null,"count":1,"max_gbps":2.5,"tb_usb4":null,"power_out_w":null,"dp_alt_mode":null},{"type":"audio_3_5mm","version":null,"count":3,"max_gbps":null,"tb_usb4":null,"power_out_w":null,"dp_alt_mode":null}],"rear_usb_count":12,"rear_usb_c_count":2,"rear_usb_max_gbps":10,"has_thunderbolt":null,"usb_headers":[{"connector":"usb_c","max_gbps":20,"count":1,"ports":1,"power_out_w":null},{"connector":"usb_3","max_gbps":5,"count":2,"ports":4,"power_out_w":null},{"connector":"usb_2","max_gbps":0.48,"count":2,"ports":4,"power_out_w":null}],"usb_c_header_max_gbps":20,"fan_header_count":7,"argb_header_count":3,"rgb_header_count":1,"ethernet_controllers":["Realtek RTL8125"],"ethernet_port_count":1,"ethernet_max_gbps":2.5,"wifi":true,"wifi_standard":"wifi_6e","wifi_bands":["2.4ghz","5ghz","6ghz"],"wifi_max_channel_width_mhz":null,"wifi_module":null,"bluetooth_version":"5.2","audio_codec":"Realtek ALC897","dac_chip":null,"bios_flashback":true,"clear_cmos_button":false,"post_code_display":false,"onboard_power_button":false,"dual_bios":false,"preinstalled_io_shield":null,"tool_free_features":["m2_latch"],"measured_vrm_temp_c":65,"measured_power_idle_w":105,"measured_power_cpu_stress_w":370,"in_the_box":["2 x Serial ATA (SATA) data cables","2 x ASRock WiFi 2.4/5/6 GHz antennas","Quick Installation Guide","Regulatory Notice"]},"variants":[],"sources":[{"url":"https://download.asrock.com/Manual/B850%20Pro%20RS%20WiFi.pdf","kind":"manual","accessed":"2026-10-15","fields":["manual_url","series","segment","model_numbers","cpu_socket","motherboard_chipset","supported_cpu_series","motherboard_form_factor","pcb_layers","back_connect_design","cpu_power_connectors","supplemental_pcie_power","ram_type","ram_slot_count","ram_max_gb","ram_max_speed_mts","ram_ecc","expansion_slots","m2_slots","sata_port_count","rear_ports","usb_headers","fan_header_count","argb_header_count","rgb_header_count","ethernet_controllers","wifi","wifi_standard","wifi_bands","bluetooth_version","audio_codec","bios_flashback","clear_cmos_button","post_code_display","onboard_power_button","dual_bios","tool_free_features","in_the_box"],"notes":{"manual_url":"ASRock manual for B850 Pro RS WiFi and B850 Pro RS on download.asrock.com, 78 pages. The same file opens under the name B850 Pro RS.pdf. This record uses the WiFi parts only.","series":"Chapter 1 calls the B850 Pro RS WiFi and the B850 Pro RS one family. The shop copy of ASRock's text calls the Race Sport (RS) Edition an evolution of the PRO series.","segment":"The board is an ASRock Pro series board (Pro RS). It is not a Phantom Gaming, Steel Legend or Taichi board, so it is mainstream by the field rule.","model_numbers":"Manual cover: B850 Pro RS WiFi. The order code 90-MXBQL0-A0UAYZ comes from the retailer listings below.","supported_cpu_series":"Specifications, page 2: AMD Socket AM5 Ryzen 9000, 8000 and 7000 Series Processors. The manual refers to the maker's website for the CPU support list. Read on 2026-10-15.","motherboard_form_factor":"Specifications, page 2: ATX Form Factor.","pcb_layers":"Specifications, page 2: 8 Layer PCB.","back_connect_design":"The layout on pages 7 and 8 shows the usual front-side power, fan and USB connectors. The board is not a back-connect design.","cpu_power_connectors":"Connector list: 1 x 24 pin ATX power connector and 2 x 8 pin 12V power connectors (Hi-Density Power Connector).","supplemental_pcie_power":"The connector list has no extra slot power connector. The manual never states that one is absent.","ram_max_gb":"Specifications, page 2: 4 x DDR5 DIMM slots, max. capacity of system memory 256GB, dual channel.","ram_max_speed_mts":"Supports DDR5 ECC/non-ECC, un-buffered memory up to 8000+(OC). The manual names no CPU family or module setup. It refers to the Memory Support List on the maker's website.","ram_ecc":"The manual says DDR5 ECC/non-ECC, un-buffered memory. It does not say whether ECC is active with each CPU.","expansion_slots":"CPU: 1 x PCIe 5.0 x16 slot (PCIE1) at x16. PCIE1 runs Gen5x16 with Ryzen 9000 and 7000, Gen4x8 with Ryzen 8000 (Phoenix 1) and Gen4x4 with Ryzen 8000 (Phoenix 2). Chipset: 1 x PCIe 4.0 x16 slot (PCIE2) at x4, which is disabled when M2_3 is occupied. The M.2 socket (Key E) for the Wi-Fi module is not listed.","m2_slots":"CPU: M2_1 (Blazing M.2, Key M) type 2280 PCIe Gen5x4 and M2_2 (Hyper M.2) type 2280 PCIe Gen4x4. M2_1 runs Gen5x4 with Ryzen 9000 and 7000 and Gen4x4 with Ryzen 8000. M2_2 runs Gen4x4 with Ryzen 9000, 7000 and 8000 (Phoenix 1) and Gen4x2 with 8000 (Phoenix 2). Chipset: M2_3 (Hyper M.2) type 2230/2242/2260/2280 PCIe Gen4x4 and M2_4 (Ultra M.2) type 2280 PCIe Gen3x4. 2280 is stored for M2_3. If M2_3 is occupied PCIE2 is disabled. If SATA3_1 or SATA3_2 is occupied M2_4 downgrades to Gen3x2. The manual lists every slot with PCIe modes only, so sata is false. The install guides in sections 2.16 to 2.19 show a heatsink to remove on M2_1, M2_3 and M2_4 and none on M2_2. Tech4Gamers confirms three of four slots have heatsinks and M2_2 has none.","sata_port_count":"Specifications: 2 x SATA3 6.0 Gb/s connectors on the chipset and 2 x SATA3 6.0 Gb/s connectors on an ASMedia ASM1061.","rear_ports":"Specifications and section 1.4 rear panel: 1 HDMI (HDMI 2.1 TMDS/FRL 8G compatible, up to 4K 120Hz), 1 USB 3.2 Gen2 Type-C (10 Gb/s), 1 USB 3.2 Gen1 Type-C (DP-alt mode DP1.4a, up to 4K 60Hz), 4 USB 3.2 Gen1 Type-A, 6 USB 2.0, 1 RJ-45 2.5G LAN and 3 HD audio jacks (Line in, Front Speaker, Microphone). The block diagram prints 5Gb/s for the Gen2 Type-C port, which the specifications list as 10 Gb/s. The specifications are stored. The two antenna ports and the BIOS Flashback button are not ports.","usb_headers":"Connector list: 1 x Front Panel Type C USB 3.2 Gen2x2 header (20 Gb/s), 2 x USB 3.2 Gen1 headers for 4 ports and 2 x USB 2.0 headers for 4 ports. The manual states no USB power output.","fan_header_count":"Connector list: 2 x CPU fan connectors, 4 x chassis fan connectors and 1 x AIO pump fan connector, all 4-pin.","argb_header_count":"Connector list: 3 x Addressable LED headers (up to 5V/3A, 15W in total).","rgb_header_count":"Connector list: 1 x RGB LED header (up to 12V/3A, 36W in total).","ethernet_controllers":"Specifications: 2.5 Gigabit LAN with the Dragon RTL8125BG. The block diagram labels it Realtek 2.5G LAN RTL8125BG. The suffix BG is stored without letters.","wifi":"Section 1.6 and specifications: the B850 Pro RS WiFi comes with an 802.11axe Wi-Fi 6E and BT module in the Key E socket.","wifi_standard":"Specifications: 802.11axe Wi-Fi 6E module, IEEE 802.11a/b/g/n/ac/ax/axe, dual-band 2x2 with extended 6GHz band support.","wifi_bands":"The module has an extended 6GHz band and the antennas are named ASRock WiFi 2.4/5/6 GHz Antennas. The 6 GHz band depends on Windows 11 and on country rules.","bluetooth_version":"Specifications and section 1.6: Bluetooth 5.2.","audio_codec":"Specifications: 7.1 CH HD Audio (Realtek ALC897 Audio Codec) with Nahimic Audio.","bios_flashback":"1 x BIOS Flashback button on the rear panel. Section 2.13 calls it the only smart switch.","clear_cmos_button":"The layout lists a Clear CMOS jumper (CLRCMOS1). The only rear panel button is BIOS Flashback.","post_code_display":"The layout lists a Post Status Checker (PSC, section 2.14). It is four colour LEDs for CPU, DRAM, VGA and BOOT, not a two-digit display.","onboard_power_button":"Section 2.13 says the only smart switch is the BIOS Flashback button. The layout lists no power or reset button.","dual_bios":"The block diagram shows one flash ROM. Dual BIOS is not stated.","tool_free_features":"The install guides for all four M.2 sockets use a nut lock that is turned clockwise to lock a 2280 module in place without a screw. The heatsinks need a screwdriver and are not tool-free. The Wi-Fi antennas screw on. The manual names no PCIe release button.","in_the_box":"Section 1.1: 2 x Serial ATA (SATA) data cables (optional) and 2 x ASRock WiFi 2.4/5/6 GHz antennas (optional) for the WiFi model. Tech4Gamers adds a Quick Installation Guide and a Regulatory Notice."}},{"url":"https://tech4gamers.com/asrock-b850-pro-rs-wifi-review/","kind":"review_site","accessed":"2026-10-15","fields":["release_date","launch_price_usd","dimensions_mm","pcb_layers","rgb_lighting","vrm_layout","vrm_vcore_power_stages","vrm_vcore_stage_rating_a","m2_slots","in_the_box","ethernet_controllers","audio_codec"],"notes":{"release_date":"Review published 2025-01-30 for a board on sale.","launch_price_usd":"The review's spec table says MSRP $189.99 USD and the summary calls the board a $189.99 motherboard. US price, excl. sales tax. It is a reviewer's statement, not ASRock's.","dimensions_mm":"Spec table: size 305 mm x 244 mm, ATX.","pcb_layers":"Text: an 8-layer PCB design.","rgb_lighting":"The text says the board has RGB lighting under the armor of the 3rd and 4th M.2 slots. Tech2Geek describes an aRGB zone on the shared M.2 heatsink. The maker's text that was readable names only the Polychrome RGB headers.","vrm_layout":"The same 14+2+1 power phase design with the same 80A SPS for VCore, SOC and MISC.","vrm_vcore_power_stages":"14 Vcore phases of the 14+2+1 design.","vrm_vcore_stage_rating_a":"80A SPS for VCore, SOC and MISC.","m2_slots":"M.2_1 is PCIe Gen5, M.2_2 and M.2_3 are PCIe Gen4 and M.2_4 is PCIe Gen3. Only 3 out of 4 slots have heatsinks, and M.2_2 has none. M.2_4 drops to Gen3x2 when SATA3_1 and SATA3_2 are used.","in_the_box":"Accessories: two SATA cables, two ASRock WiFi 2.4/5/6 GHz antennas, Quick Installation Guide and Regulatory Notice.","ethernet_controllers":"Dragon RTL8125BG LAN controller, up to 2.5G.","audio_codec":"Realtek ALC897 audio codec."}},{"url":"https://tech4gamers.com/asrock-b850-pro-rs-wifi-review/","kind":"measurement","accessed":"2026-10-15","fields":["measured_vrm_temp_c","measured_power_idle_w","measured_power_cpu_stress_w"],"notes":{"measured_vrm_temp_c":"Chart: VRM temperature 65 C. Ryzen 9 9950X at stock, 24 C room temperature, 30 minutes of Cinebench 2024. The test bench also has an Arctic Liquid Freezer II 420 and an RTX 4090. The sensor and the CPU package power are not stated.","measured_power_idle_w":"Chart: idle 105 W with the same Ryzen 9 9950X system. The text calls it power consumption and does not name the meter. The method is not stated, so this is read as whole system power.","measured_power_cpu_stress_w":"Chart: load 370 W, and the text says full load, with the same system. The stress test, the meter and whether the graphics card was loaded are not stated."}},{"url":"https://www.tech2geek.net/asrock-b850-pro-rs-wi-fi-review-the-budget-motherboard-that-nails-am5-performance/","kind":"review_site","accessed":"2026-10-15","fields":["pcb_layers","rgb_lighting","vrm_layout","vrm_vcore_power_stages","vrm_vcore_stage_rating_a","status"],"notes":{"pcb_layers":"A black 8-layer PCB.","rgb_lighting":"An aRGB zone is integrated in the heatsink shared by two M.2 slots, with customizable lighting. The box names Polychrome Sync aRGB technology.","vrm_layout":"Two aluminum heatsinks cool the power delivery (14 + 2 + 1, SPS 80A for Vcore, SOC and MISC), with no heatpipe between them.","vrm_vcore_power_stages":"14 Vcore stages of the 14+2+1 design.","vrm_vcore_stage_rating_a":"SPS 80A for Vcore, SOC and MISC.","status":"Review of 2025-11-28 with an Amazon price of $159. The board was on sale then."}},{"url":"https://www.arvutitark.ee/en/pc-components/motherboards/mb-asrock-amd-am5-b850-pro-rs-wifi-1425695","kind":"retailer","accessed":"2026-10-15","fields":["model_numbers","warranty_years","vrm_layout","vrm_vcore_power_stages","vrm_vcore_stage_rating_a","status"],"notes":{"model_numbers":"Product code 90-MXBQL0-A0UAYZ.","warranty_years":"Warranty (months) 36. The market is Estonia.","vrm_layout":"The shop copies ASRock's feature text: 14+2+1 Phase Power Design, 80A Dr.MOS for VCore+SOC+MISC.","vrm_vcore_power_stages":"The first number of 14+2+1 is the Vcore rail.","vrm_vcore_stage_rating_a":"80A Dr.MOS for VCore+SOC+MISC, as the shop copies ASRock's text.","status":"The listing shows 10 pieces available to order on 2026-10-15."}},{"url":"https://shop.mnetworks.dk/asrock-b850-pro-rs-wifi/cat-p/c/p1005560262","kind":"retailer","accessed":"2026-10-15","fields":["gtins","model_numbers","dimensions_mm"],"notes":{"gtins":"Lists EAN 4711581490178 for part number 90-MXBQL0-A0UAYZ.","model_numbers":"Part number 90-MXBQL0-A0UAYZ.","dimensions_mm":"ATX Form Factor: 12.0-in x 9.6-in, 30.5 cm x 24.4 cm."}},{"url":"https://www.komputronik.pl/product/955011/plyta-glowna-asrock-b850-pro-rs-wifi.html","kind":"retailer","accessed":"2026-10-15","fields":["gtins","dimensions_mm"],"notes":{"gtins":"Lists Kod EAN 4711581490178 for manufacturer code B850 Pro RS WiFi.","dimensions_mm":"Dimensions table: 244 mm and 305 mm."}},{"url":"https://www.gdm.or.jp/crew/2025/0110/570520","kind":"press","accessed":"2026-10-15","fields":["release_date"],"notes":{"release_date":"Hermitage Akihabara report of 2025-01-10: the ATX Pro series board B850 Pro RS WiFi went on sale at TSUKUMO on 2025-01-10. The article is about Japan."}},{"url":"https://weekly.ascii.jp/elem/000/004/244/4244804/","kind":"press","accessed":"2026-10-15","fields":["release_date","vrm_layout"],"notes":{"release_date":"Weekly ASCII reports that ASRock released the B850 Pro RS WiFi in Japan with Akihabara shops selling it in January 2025.","vrm_layout":"Calls it the ATX model of the Pro RS series with a 14+2+1 phase power circuit using Dr.MOS."}},{"url":"https://www.amd.com/en/products/processors/chipsets/am5.html","kind":"manufacturer_page","accessed":"2026-10-15","fields":["cpu_overclocking"],"notes":{"cpu_overclocking":"AMD's chipset page says the B850 platform has enhanced overclocking capabilities and DDR5 memory overclocking with EXPO. This is the chip maker's page, not the board maker's."}},{"url":"https://www.asrock.com/mb/AMD/B850%20Pro%20RS%20WiFi/index.asp","kind":"manufacturer_page","accessed":"2026-10-15","fields":["manufacturer_url"],"notes":{"manufacturer_url":"The link comes from web search results for this model. asrock.com answers agents with a bot check, so the page was not read and its content is not used for any value."}},{"url":"https://computermania.co.za/products/asrock-b850-pro-rs-wi-fi-atx-motherboard-amd-am5-ddr5-pcie-5-0","kind":"retailer","accessed":"2026-10-15","fields":["dimensions_mm"],"notes":{"dimensions_mm":"Spec copy: ATX Form Factor (30.5 cm x 24.4 cm)."}}],"fields_filled":62,"updated":"2026-10-16"},"meta":{"api_version":"1","docs":"https://arkivo.dev/api"}}