ASRock B850 Steel Legend WiFi Motherboard Socket AM5 AMD B850 ATX DDR5
ASRock B850 Steel Legend WiFi Motherboard Socket AM5 AMD B850 ATX DDR5, photo 2
ASRock B850 Steel Legend WiFi Motherboard Socket AM5 AMD B850 ATX DDR5, photo 3
ASRock B850 Steel Legend WiFi Motherboard Socket AM5 AMD B850 ATX DDR5, photo 4
ASRock B850 Steel Legend WiFi Motherboard Socket AM5 AMD B850 ATX DDR5, photo 5
ASRock B850 Steel Legend WiFi Motherboard Socket AM5 AMD B850 ATX DDR5, photo 6
ASRock

ASRock B850 Steel Legend WiFi Motherboard Socket AM5 AMD B850 ATX DDR5

SKU HC-282568MPN 90-MXBQS0-A0UAYZ

  • AM5
  • B850
  • ATX

Highlights

  • AM5 socket and B850 chipset support Ryzen 7000 through 9000 series
  • Four DDR5 DIMM slots supporting up to 256 GB at 8000 MT/s OC
  • One PCIe 5.0 x16 slot and one PCIe 4.0 x16 slot running at x4
  • Four M.2 slots: one PCIe 5.0 x4 and three PCIe 4.0 x4
  • Wi-Fi 7, Bluetooth 5.4, and 2.5 GbE LAN with Realtek RTL8125BG
  • Six 4-pin PWM fan headers, dual 8-pin CPU power, USB 3.2 Gen 2x2 Type-C

Key specs

Socket
AM5
Chipset
B850
Form factor
ATX
Memory
DDR5
Wi-Fi
Yes
Motherboard Chipset
AMD B850
All specifications
$159.99
  • ≈ 0.002095 BTC
  • ≈ 0.07064 ETH
  • ≈ 160.19 USDT

In stock Ships by Tue, Nov 10 when paid today.

  • Delivery to the United States: $39.90 DHL Express Worldwide · arrives Wed, Nov 11 – Mon, Nov 16 if paid today
  • Rate locked at checkout Up to 60 min to send BTC, 30 min for ETH and USDT
  • New, sealed and genuine Full manufacturer warranty
  • 30-day returns Unused items in original packaging
Pay with BTCETHUSDTTRC20USDTERC20

Overview

An ATX motherboard built on the AMD B850 chipset for Ryzen 9000, 8000, and 7000 processors. It supports DDR5 memory up to 8000 MT/s and PCIe 5.0 for graphics and storage.

Design and Power Delivery

The board uses a white ATX form factor with VRM and M.2 heatsinks. Dual 8-pin CPU power connectors provide stable current for high-end Ryzen processors during sustained loads.

Memory and Expansion

Four DIMM slots accept up to 256 GB of DDR5 with AMD EXPO and Intel XMP profiles. The primary PCIe 5.0 x16 slot connects directly to the CPU, while a second slot runs at PCIe 4.0 x4 from the chipset.

Storage and Connectivity

Four M.2 sockets include one PCIe 5.0 and three PCIe 4.0 lanes, plus four SATA 6 Gbps ports. Rear I/O offers two USB 3.2 Gen 2x2 Type-C, two USB 3.2 Gen 2 Type-A, three USB 3.2 Gen 1 Type-A, four USB 2.0, HDMI, and 2.5 GbE LAN.

Wireless and Cooling Control

Integrated Wi-Fi 7 and Bluetooth 5.4 handle modern wireless needs. Six 4-pin PWM headers, RGB and addressable RGB headers, and a BIOS Flashback button round out the feature set.

B850 Steel Legend WiFi Motherboard Socket AM5 AMD B850 ATX DDR5 specifications

General
BrandASRock
Manufacturer part no.90-MXBQS0-A0UAYZ
EAN4711581490062
Form Factor
Motherboard Form FactorATX
CPU
CPU ManufacturerAMD
CPU SocketAM5
Motherboard
Motherboard ChipsetAMD B850
Memory
Max. Memory256 GB
Memory TypeDDR5
Memory Form FactorDIMM
Max. Memory Speed (OC)8000 MT/s
ECC SupportYes
Memory slots4x
Performance ProfileAMD EXPO, Intel XMP
Wi-Fi & LAN
LANYes
LAN Ports1x 2.5 Gbit/s
LAN ChipDragon RTL8125BG
Wi-Fi / BluetoothYes
Wi-Fi StandardWi-Fi 7
Bluetooth Standard5.4
Cooling
M.2 HeatsinksYes
VRM HeatsinksYes
Internal Ports
CPU Power Supply2x 8-Pin
USB 3.0 / 3.1 / 3.2 (internal) Type C Header1
USB 3.0 / 3.1 / 3.2 (internal) Type C Possible Ports1
USB 3.0 (internal) Header2
USB 3.0 (internal) Possible Ports4
USB 2.0 (internal) Header2
USB 2.0 (internal) Possible Ports4
RGB / LED connectors1x RGB (4-Pin 5050 12VGRB), 3x Digital RGB (3-Pin 5VDG)
Front Panel Audio HeaderYes
SPI TPM HeaderYes
External Ports
USB 3.1 (external) Type C2
USB 3.1 (external) Type A2
USB 3.0 (external) Type A3
USB 2.0 (external) Type A4
Display ConnectorsHDMI (1x)
Storage Ports
M.2 PCIe 4.0 x43
M.2 PCIe 5.0 x41
SATA 6G (internal)4
Expansion Slots
PCIe x16 slots (total)1
PCIe x4 slots (total)1
PCIe 5.0 x16 mechanical slot1
PCIe 4.0 x16 mechanical slot1
Fan Header
4 Pin Fan Connectors6
Audio
SoundchipRealtek ALC4082
Lighting
Lighting / RGBYes
Color
Primary ColorWhite

Specifications come from the manufacturer and can change without notice. Check the box contents and compatibility before ordering; our team answers questions within one business day.

Shipping & returns

Delivery to the United States: $39.90DHL Express Worldwide · arrives Wed, Nov 11 – Mon, Nov 16 if paid today

Ships from our warehouse in Germany: in stock, it leaves within 1–2 business days, tracked to the door.
ToBusiness daysThis item
GermanyDHL Paket1–2Free
Other EU countriesDHL Parcel International2–8$11.90–$15.90
UK, Switzerland and NorwayDHL Parcel International3–7$24.90
United States and CanadaDHL Express Worldwide2–5$39.90
Asia and the Middle EastDHL Express Worldwide2–5$49.90
Australia and New ZealandDHL Express Worldwide3–6$59.90
  • Discreet packaging Plain, unbranded box — no crypto or brand references outside
  • Returns 30 days for unused items in original packaging; faulty items are on us
Rates and delivery times by country

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