ASRock B850M Steel Legend WiFi

Name: ASRock B850M Steel Legend WiFi
Brand: ASRock
SKU: 31794

Manufacturer: ASRock

The ASRock B850M Steel Legend WiFi is a Micro-ATX motherboard built around the AM5 socket and B850 chipset, aimed at users who want a compact but well-equipped platform for modern AMD processors. It includes Wi-Fi 7 (802.11be) alongside Bluetooth 5.4, making wireless connectivity a strong point of the board without requiring any additional adapters. RGB lighting and dual BIOS support are also part of the package, and ASRock backs the board with a three-year warranty.

On the memory side, the board provides four DDR5 slots across two channels, supporting up to 256 GB at speeds reaching 8000 MHz. Expansion is handled by a single PCIe 5.0 x16 slot and one PCIe x4 slot, while storage options include three M.2 sockets and four SATA 3 connectors with RAID 0, 1, and 10 support. The rear I/O offers a mix of USB ports including one USB 3.2 Gen 2 Type-A, one USB 3.2 Gen 2 Type-C, and four USB 2.0 ports, complemented by HDMI 2.1 and DisplayPort outputs. Audio is handled by a 7.1-channel solution with a 120 dB signal-to-noise ratio, and the board includes five fan headers for thermal management flexibility.

Pros

Supports Wi-Fi 7 alongside all previous Wi-Fi generations down to Wi-Fi 4, covering a wide range of wireless use cases without needing an add-in card
Three M.2 sockets provide generous NVMe storage expansion for a Micro-ATX board
DDR5 memory support with up to 256 GB capacity across four slots offers substantial headroom for memory-intensive workloads
The single PCIe 5.0 x16 slot ensures compatibility with the latest generation of discrete graphics cards and other high-bandwidth expansion devices
Dual BIOS adds a layer of protection against failed firmware updates
Onboard audio delivers 7.1-channel output with a 120 dB signal-to-noise ratio, reducing the need for a separate sound card

Cons

No easy BIOS reset button, which can complicate recovery from problematic settings
ECC memory is not supported, limiting suitability for workloads that require error-correcting RAM
Only one USB 3.2 Gen 2 Type-A port on the rear panel, with the remaining faster ports limited to a single Type-C
No S/PDIF Out port for users who rely on digital audio passthrough to external receivers
RAID 5 and RAID 0+1 are not supported, narrowing storage redundancy options for users with more complex array needs

Who is this for?

This board is a solid fit for users building a compact AMD AM5 system who still want access to modern connectivity and storage options. The three M.2 sockets combined with a PCIe 5.0 x16 slot make it well-suited for enthusiast desktop builds where NVMe storage and a current-generation GPU are priorities. The inclusion of Wi-Fi 7 and Bluetooth 5.4 also makes it a practical choice for small form-factor builds in living room or desktop environments where running ethernet cables is not always practical. Users who want overclocking capability within a Micro-ATX footprint will also find the DDR5 support up to 8000 MHz and native overclock enablement relevant to their needs.

Who is this NOT for?

This board is not a good match for users who need ECC memory support, such as those running workstations, small servers, or any application where data integrity under sustained load is a requirement. The absence of USB 4, Thunderbolt 3, or Thunderbolt 4 ports makes it a poor fit for professionals who rely on high-bandwidth external devices such as fast external SSDs or professional audio and video interfaces that depend on those standards. Additionally, users who need more than two rear USB 3.2 Gen 2 connections or require RAID 5 for larger storage arrays will find the board's storage and port configuration limiting.

General info:

CPU socket	AM5
chipset	B850
form factor	Micro-ATX
supports Wi-Fi	✓
Wi-Fi version	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)
Has Bluetooth	✓
Bluetooth version	5.4
HDMI version	HDMI 2.1
Easy to overclock	✓
has RGB lighting	✓
Easy to reset BIOS	✕
Has dual BIOS	✓
has aptX	✕
CPU sockets	1
Has integrated graphics	✕
warranty period	3 years
height	244 mm
width	244 mm
Has integrated CPU	✕

The ASRock B850M Steel Legend WiFi is built around the AM5 socket with a B850 chipset and adopts the Micro-ATX form factor, measuring 244 mm x 244 mm. It supports a single CPU and does not include an integrated processor or integrated graphics. Wireless connectivity spans Wi-Fi 4 through Wi-Fi 7 (802.11be), and Bluetooth 5.4 is also on board, though aptX is not supported. Video output is available via an HDMI 2.1 port, and the board features RGB lighting along with dual BIOS for added resilience, although there is no easy BIOS reset button. Overclocking is supported, and the board carries a three-year warranty.

Memory:

maximum memory amount	256GB
RAM speed (max)	8000 MHz
overclocked RAM speed	8000 MHz
memory slots	4
DDR memory version	5
memory channels	2
Supports ECC memory	✕

This board uses DDR5 memory and provides four slots arranged across two channels, supporting a maximum capacity of 256 GB. RAM speeds reach up to 8000 MHz, which also reflects the overclocked ceiling, so there is no additional headroom beyond that figure when pushing memory beyond stock settings. ECC memory is not supported.

Ports:

USB 3.2 Gen 2 ports (USB-A)	1
USB 3.2 Gen 1 ports (USB-A)	2
USB 3.2 Gen 2 ports (USB-C)	1
USB 3.2 Gen 1 ports (USB-C)	0
USB 2.0 ports	4
USB 3.2 Gen 2x2 ports	0
USB 4 40Gbps ports	0
USB 4 20Gbps ports	0
Thunderbolt 4 ports	0
Thunderbolt 3 ports	0
has an HDMI output	✓
DisplayPort outputs	1
RJ45 ports	1
Has USB Type-C	✓
eSATA ports	0
DVI outputs	0
has a VGA connector	✕
PS/2 ports	0

The rear I/O panel includes a total of eight USB ports: one USB 3.2 Gen 2 Type-A, two USB 3.2 Gen 1 Type-A, one USB 3.2 Gen 2 Type-C, and four USB 2.0 ports. There are no USB 3.2 Gen 2x2, USB 4, Thunderbolt 3, or Thunderbolt 4 ports, and no USB 3.2 Gen 1 Type-C port is present either. For display output, the board offers one HDMI port and one DisplayPort, while VGA and DVI outputs are absent. Networking is covered by a single RJ45 port, and legacy connectors such as eSATA and PS/2 are not included.

Connectors:

USB 3.2 Gen 1 ports (through expansion)	4
USB 2.0 ports (through expansion)	4
SATA 3 connectors	4
fan headers	5
USB 3.0 ports (through expansion)	4
M.2 sockets	3
Has TPM connector	✓
U.2 sockets	0
Has mSATA connector	✕
SATA 2 connectors	0

For internal connectivity, the board provides three M.2 sockets and four SATA 3 connectors, while SATA 2 and mSATA are not available. Expansion headers allow for four additional USB 3.2 Gen 1 ports, four USB 3.0 ports, and four USB 2.0 ports. Thermal management is supported through five fan headers, and a TPM connector is present for security module use. There are no U.2 sockets on this board.

Expansion slots:

PCIe 4.0 x16 slots	0
PCIe 5.0 x16 slots	1
PCIe 3.0 x16 slots	0
PCIe x1 slots	0
PCI slots	0
PCIe 2.0 x16 slots	0
PCIe x4 slots	1
PCIe x8 slots	0

The board offers two expansion slots in total: one PCIe 5.0 x16 slot and one PCIe x4 slot. No PCIe 4.0, 3.0, or 2.0 x16 slots are present, and there are no PCIe x1, PCIe x8, or legacy PCI slots on this board.

Audio:

Signal-to-Noise ratio (DAC)	120 dB
audio channels	7.1
Has S/PDIF Out port	✕
audio connectors	3

The onboard audio supports 7.1-channel output and delivers a DAC signal-to-noise ratio of 120 dB, with three analog audio connectors available on the rear panel. An S/PDIF Out port is not included.

Storage:

Supports RAID 1	✓
Supports RAID 10 (1+0)	✓
Supports RAID 5	✕
Supports RAID 0	✓
Supports RAID 0+1	✕

The board supports RAID 0, RAID 1, and RAID 10 configurations, covering the most common setups for both performance and redundancy. RAID 5 and RAID 0+1 are not supported.

Final Verdict

The ASRock B850M Steel Legend WiFi positions itself as a capable Micro-ATX option for users who want a modern AM5 platform without sacrificing connectivity or expandability. Its Wi-Fi 7 support alongside three M.2 sockets and a PCIe 5.0 x16 slot gives it a feature set that punches above what its compact form factor might suggest, making it a reasonable choice for enthusiast desktop builds where space is a constraint but performance expectations remain high. That said, the lack of ECC memory support, the absence of Thunderbolt or USB 4 ports, and the limited RAID configuration options mean it is best suited to mainstream desktop use rather than professional or workstation environments. For users whose needs align with those boundaries, this board delivers a well-rounded package with solid wireless capability, meaningful storage flexibility, and DDR5 memory support up to 8000 MHz.