Asrock B850M Steel Legend WiFi AM5 micro ATX

£144.53 inc VAT

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About This Item

  • 3 M.2 slots for NVMe SSDs with PCIe 4.0/5.0 support
  • AMD B850 chipset with AM5 socket for Ryzen 7000/8000/9000 CPUs
  • Supports up to 256 GB DDR5 memory in dual-channel configuration
  • Wi-Fi 7 + 2.5 Gb/s Ethernet for high-speed connectivity
  • micro ATX form factor with 7.1-channel Realtek ALC1220 audio

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Description

ASRock B850M Steel Legend WiFi | Micro ATX AMD Powerhouse

The ASRock B850M Steel Legend WiFi AMD B850 Socket AM5 micro ATX is a high-performance motherboard designed for AMD Ryzen 7000, 8000, and 9000 series processors. Built around the AMD B850 chipset, this micro ATX board delivers robust power delivery, advanced connectivity, and extensive expandability for both gaming and productivity systems.

Quick Specs

Metric Spec
Processor Socket Socket AM5
Memory Support DDR5-SDRAM up to 256 GB
PCIe Slots 1x PCIe 5.0 x16, 1x PCIe 4.0 x4
M.2 Slots 3x (2x PCIe 4.0, 1x PCIe 5.0)
Network 2.5Gb/s LAN, Wi-Fi 7, Bluetooth 5.4
Audio Realtek ALC1220 7.1-channel
Form Factor micro ATX (244mm x 244mm)

Optimized VRM Design for Stable Overclocking

The B850M Steel Legend features a 12+2+1 power phase design with Dr. MOS technology, delivering smooth and stable power to your CPU even under heavy overclocking loads. The upgraded 20K Black capacitors provide 1000µF capacitance—double the previous generation—ensuring lower ripple, more stable output current, and improved thermal performance. This robust VRM design allows enthusiasts to push their Ryzen processors to the limit without compromising system stability.

High-Speed Storage and Memory Performance

With three M.2 slots supporting both PCIe 4.0 and the latest PCIe 5.0 standards, this motherboard can accommodate ultra-fast NVMe SSDs delivering up to 128Gb/s transfer speeds. The Hyper M.2 Gen4 x4 slot provides lightning-fast data access for everyday storage needs. DDR5 memory support with XMP/EXPO profiles allows for easy memory overclocking, enabling users to boost performance without manual tweaking—perfect for content creators and gamers who demand quick load times and responsive systems.

Advanced Connectivity and Networking

Stay connected with Dragon RTL8125BG 2.5Gb/s Ethernet and Wi-Fi 7 (802.11be) with Multi-link Operation (MLO) technology. Wi-Fi 7 delivers extreme wireless speeds, lower latency, and improved throughput for cloud gaming, 8K streaming, and video conferencing. Bluetooth 5.4 ensures reliable connections for peripherals. The motherboard also features Lightning Gaming Ports sourced from separate controllers to reduce jitter and latency for competitive gaming setups.

Intelligent Cooling and DIY-Friendly Design

The aluminum heatsink design efficiently dissipates heat from critical components, maintaining optimal temperatures during intense workloads. ASRock’s Fan-Tastic Tuning automatically detects fan types (DC/PWM) and allows for easy curve adjustment via the UEFI or software. DIY features include an enlarged graphics card release latch, M.2 bottom heatsink for SSD cooling, and a flexible integrated I/O shield that adjusts to fit your case perfectly. The EZ Setting with auto driver installer simplifies the initial setup process.

Box Contents

  • ASRock B850M Steel Legend WiFi motherboard
  • SATA cables (quantity not specified)
  • M.2 standoff screws
  • Wi-Fi antennas
  • I/O shield
  • User manual and driver DVD

Check Before You Buy

  • Confirm your AMD Ryzen processor is Socket AM5 compatible
  • Verify your case supports micro ATX (244mm x 244mm) dimensions
  • Ensure your PSU has a 24-pin ATX and 8-pin EPS connector
  • Check if your DDR5 memory modules support XMP/EXPO profiles

Frequently Asked Questions

Q: What processors are compatible with this motherboard?

A: AMD Ryzen 7000, 8000, and 9000 series processors with Socket AM5.

Q: Does this motherboard support PCIe 5.0 devices?

A: Yes, one M.2 slot supports PCIe 5.0 for the latest NVMe SSDs.

Q: Is Wi-Fi 7 included or is it an upgrade?

A: Wi-Fi 7 is built-in with the latest 802.11be standard and Bluetooth 5.4.

Q: How many M.2 SSDs can I install?

A: Three M.2 slots are available—two PCIe 4.0 and one PCIe 5.0.

Q: What is the maximum RAM capacity?

A: Supports up to 256 GB of DDR5 memory across four DIMM slots.

The Consultant’s Verdict & Warranty

The ASRock B850M Steel Legend WiFi offers exceptional value for AMD enthusiasts seeking a micro ATX platform with cutting-edge features. Its combination of PCIe 5.0 support, Wi-Fi 7 connectivity, robust VRM design, and comprehensive cooling makes it ideal for gaming builds, content creation workstations, and HTPCs where space efficiency matters. The motherboard’s extensive connectivity options and DIY-friendly features ensure a smooth building experience. Covered by the standard Manufacturer Warranty.

Specifications
Internal I/O
Number of M.2 (M) slots3
12V power connectorYes
Supported storage drive interfacesPCI Express 4.0, PCI Express 5.0, SATA III
USB 2.0 connectors2
USB 3.2 Gen 1 (3.1 Gen 1) connectors3
TPM connectorYes
Number of SATA III connectors4
Number of chassis fan connectors3
Front panel audio connectorYes
EPS power connector (8-pin)Yes
CPU fan connectorYes
ATX Power connector (24-pin)Yes
RGB LED pin headerYes
Number of CPU fan connectors2
Number of EPS power connectors (8-pin)1
Number of RGB LED pin headers1
Technical details
Motherboard chipset familyAMD
Motherboard chipsetAMD B850
Supported processor socketsSocket AM5
Parallel processing technology supportNot supported
HDMI version2.1
Motherboard form factormicro ATX
Component forPC
Audio
Audio output channels7.1 channels
Performance
Supported storage drive typesHDD & SSD
Windows operating systems supportedWindows 10 x64, Windows 11 x64
Motherboard chipset familyAMD
Motherboard chipsetAMD B850
RAID levels0, 1, 10
Supported processor socketsSocket AM5
CertificationFCC, CE, ErP/EuP
Audio output channels7.1 channels
Motherboard form factormicro ATX
Component forPC
Processor
Processor manufacturerAMD
Compatible processor seriesAMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
Supported processor socketsSocket AM5
Processor socketSocket AM5
Memory
Number of memory slots4
Memory slots typeDIMM
Supported memory typesDDR5-SDRAM
Memory channelsDual-channel
Maximum internal memory256 GB
Unbuffered memoryYes
ECC сompatibilityECC & Non-ECC
Storage controllers
Supported storage drive typesHDD & SSD
Supported storage drive interfacesPCI Express 4.0, PCI Express 5.0, SATA III
RAID levels0, 1, 10
Number of storage drives supported7
RAID supportYes
Graphics
Parallel processing technology supportNot supported
Maximum resolution3840 x 2160 pixels
HDCPYes
Rear panel I/O ports
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity2
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity1
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity1
DisplayPort version1.4
USB connector typeUSB Type-A, USB Type-C
USB 2.0 ports quantity4
WiFi-AP antenna jack2
Microphone inYes
Headphone outputs3
HDMI version2.1
HDMI ports quantity1
Ethernet LAN (RJ-45) ports1
DisplayPorts quantity1
Line-inYes
Network
Ethernet LANYes
Wi-FiYes
Wi-Fi standards802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax), Wi-Fi 6E (802.11ax), Wi-Fi 7 (802.11be)
LAN controllerDragon RTL8125BG
Ethernet interface type2.5 Gigabit Ethernet
BluetoothYes
Bluetooth version5.4
Top Wi-Fi standardWi-Fi 7 (802.11be)
Features
Windows operating systems supportedWindows 10 x64, Windows 11 x64
Motherboard chipset familyAMD
Motherboard chipsetAMD B850
Supported processor socketsSocket AM5
CertificationFCC, CE, ErP/EuP
Audio output channels7.1 channels
Motherboard form factormicro ATX
Component forPC
Audio chipRealtek ALC1220
Product colourWhite
Expansion slots
Number of M.2 (M) slots3
PCI Express x16 (Gen 5.x) slots1
PCI Express x4 (Gen 4.x) slots1
1st M.2 largest key size2280
1st M.2 highest PCI Express generation5.0
2nd M.2 largest key size2280
2nd M.2 highest PCI Express generation4.0
3rd M.2 largest key size2280
3rd M.2 highest PCI Express generation4.0
BIOS
BIOS typeUEFI AMI
BIOS memory size256 Mbit
Video
Maximum resolution3840 x 2160 pixels
HDCPYes
Certificates
CertificationFCC, CE, ErP/EuP
Software
Windows operating systems supportedWindows 10 x64, Windows 11 x64
Weight & dimensions
Width244 mm
Depth244 mm
Packaging content
Cables includedSATA
Screws includedYes
M.2 standoff includedYes
Antenna includedYes

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