AsRock B850M Steel Legend WiFi

AM5, AMD B850, mATX
12Ratings
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Product details

The ASRock B850M Steel Legend WiFi is based on the AMD B850 chipset and supports AMD processors for the AM5 socket. It has four DDR5 slots for up to 256 GB of RAM.

Key specifications

Mainboard features
Front panel audio connector, Temperature sensor connections, Trusted Platform Module
Wireless transmission
Bluetooth, Wi-Fi
Memory form factor
DIMM
Number of memory modules (RAM)
4x
Internal connections
M.2 PCIe (3x), S-ATA III (4x)

General information

Item number
53885124
Manufacturer
AsRock
Category
Motherboards
Manufacturer No.
90-MXBS2-A0UAYZ
Release date
6.1.2025
Sales rank in Category Motherboards
136 of 1124
External links
Manufacturer's site (de)

Motherboard properties

Form factor
Micro ATX (mATX)
Socket
AM5
Chipset
AMD B850
Mainboard features
Front panel audio connector, Temperature sensor connections, Trusted Platform Module
Operating system compatibility
Linux, Windows 10, Windows 11 Home, Windows 11 Pro
BIOS type
UEFI AMI
Wireless transmission
Bluetooth, Wi-Fi
Wi-Fi standard
Wi-Fi 1 / 802.11b, Wi-Fi 2 / 802.11a, Wi-Fi 3 / 802.11g, Wi-Fi 4 / 802.11n, Wi-Fi 5 / 802.11ac, Wi-Fi 6 / 802.11ax, Wi-Fi 7 / 802.11be

Memory

Memory form factor
DIMM
Number of memory modules (RAM)
4x
Max. memory (RAM)
256 GB
Memory chip
DDR5 SDRAM
Max. RAM OC
5600 MHz
RAM buffer
Unbuffered

Graphics properties

Video connections
DisplayPort (1x), HDMI (1x)
Video connection version
Display port 1.4, HDMI 2.1

Network

Network connections
RJ45 2.5 Gigabit Ethernet (1x)
Ethernet controller brand
Realtek
Ethernet controller
Dragon RTL8125BG
Max. port speed
2.50 Gbit/s

Audio

Chip
Realtek ALC1220
Audio channel
7.1 Channel
Audio Connections
Headphone output (3x), Microphone connection (1x)

Data storage

RAID configuration
0, 1, 10

Internal interfaces

Internal connections
M.2 PCIe (3x), S-ATA III (4x)
Expansion slot
PCI Express x16 (Gen 5) (1x), PCI Express x4 (1x)
PCI express version (max.)
5
Number of fan connector
3

Further connections

USB ports
USB-A, USB-C
Exact USB ports
USB-A 2.0 (4x), USB-A 3.2 Gen 1 (2x), USB-A 3.2 Gen 2 (2x), USB-C 3.2 Gen 2 (1x)

Power supply

Power connectors
24-pin ATX

Origin

Country of origin
China

Voluntary climate contribution

CO₂ emissions
2270.49 kg
Climate contribution
CHF 6.75

Scope of delivery

Scope of delivery
Aerial, SATA cable, Screws

Product dimensions

Length
244 mm
Width
244 mm
Height
244 mm

Package dimensions

Length
30.10 cm
Width
26.90 cm
Height
6.20 cm
Weight
1.48 kg

30-day right of return
24 Months Warranty (Bring-in)
12 additional offers

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «Motherboards» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • 3.Gigabyte
    2.6 %
  • 4.Biostar
    2.8 %
  • 5.AsRock
    2.9 %
  • 6.Supermicro
    3.8 %
  • 7.NZXT
    4.3 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • 1.MSI
    4 days
  • 2.ASUS
    8 days
  • 3.AsRock
    9 days
  • 3.Gigabyte
    9 days
  • 3.NZXT
    9 days

Return rate

How often is a product of this brand in the «Motherboards» category returned?

Source: Digitec Galaxus
  • 2.Gigabyte
    5.1 %
  • 3.ASUS
    5.3 %
  • 4.AsRock
    5.9 %
  • 5.Sapphire
    6 %
  • 6.Supermicro
    10.4 %
Source: Digitec Galaxus