ASRock Steel Legend B850M WiFi 7 AM5 mATX Motherboard
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Key Specifications
Choose one or multiple features to search for items that have the same specifications.| Processor | |
| Processor manufacturer | AMD |
| Compatible processor series | AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series |
| Processor socket | AM5 |
| Supported processor sockets | Socket AM5 |
| Memory | |
| Maximum internal memory | 256 GB |
| ECC | ![]() |
| Non-ECC | ![]() |
| Supported memory types | DDR5 |
| Memory channels | Dual-channel |
| Unbuffered memory | ![]() |
| Memory slots type | DIMM |
| Number of memory slots | 4 |
| Supported memory clock speed (max) | 8000 MHz |
| ECC сompatibility | ECC & Non-ECC |
| Weight & dimensions | |
| Width | 244 mm |
| Depth | 244 mm |
| Networking | |
| Wi-Fi standards | 802.11a, 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) |
| Bluetooth version | 5.4 |
| Ethernet LAN | ![]() |
| Bluetooth | ![]() |
| LAN controller | Dragon RTL8125BG |
| Wi-Fi | ![]() |
| Ethernet interface type | 2.5 Gigabit Ethernet |
| Top Wi-Fi standard | Wi-Fi 7 (802.11be) |
| Internal I/O | |
| USB 2.0 connectors | 2 |
| CPU fan connector | ![]() |
| ATX Power connector (24-pin) | ![]() |
| Number of chassis fan connectors | 3 |
| Front panel audio connector | ![]() |
| TPM connector | ![]() |
| EPS power connector (8-pin) | ![]() |
| USB 3.2 Gen 1 (3.1 Gen 1) connectors | 3 |
| Number of SATA III connectors | 4 |
| USB 3.2 Gen 2 (3.1 Gen 2) connectors | 0 |
| Front panel connector | ![]() |
| 12V power connector | ![]() |
| RGB LED pin header | ![]() |
| Number of RGB LED pin headers | 1 |
| Number of CPU fan connectors | 2 |
| Number of EPS power connectors (8-pin) | 1 |
| Back panel I/O ports | |
| Line-in | ![]() |
| USB connector type | USB Type-A, USB Type-C |
| USB 2.0 ports quantity | 4 |
| Ethernet LAN (RJ-45) ports | 1 |
| Headphone outputs | 3 |
| Microphone in | ![]() |
| VGA (D-Sub) ports quantity | 0 |
| DVI-D ports quantity | 0 |
| WiFi-AP antenna jack | 2 |
| HDMI ports quantity | 1 |
| HDMI version | 2.1 |
| DisplayPorts quantity | 1 |
| DisplayPort version | 1.4 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 2 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity | 0 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity | 1 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity | 1 |
| Storage controllers | |
| RAID levels | 0, 1, 10 |
| RAID support | ![]() |
| Number of storage drives supported | 7 |
| Supported storage drive types | HDD & SSD |
| Supported storage drive interfaces | PCI Express 4.0, PCI Express 5.0, SATA III |
| Packaging content | |
| Cables included | SATA |
| Screws included | ![]() |
| Antenna included | ![]() |
| M.2 standoff included | ![]() |
| Expansion slots | |
| PCI Express x16 slots | 2 |
| Number of M.2 (M) slots | 3 |
| PCI Express x16 (Gen 4.x) slots | 1 |
| PCI Express x4 (Gen 4.x) slots | 1 |
| PCI Express x16 (Gen 5.x) slots | 1 |
| 1st M.2 largest key size | 2280 |
| 2nd M.2 largest key size | 2280 |
| 3rd M.2 largest key size | 2280 |
| 1st M.2 highest PCI Express generation | 5.0 |
| 2nd M.2 highest PCI Express generation | 4.0 |
| 3rd M.2 highest PCI Express generation | 4.0 |
| BIOS | |
| BIOS memory size | 256 Mbit |
| BIOS type | UEFI AMI |
| Clear CMOS button | ![]() |
| Graphics | |
| Maximum resolution | 3840 x 2160 pixels |
| Parallel processing technology support | Not supported |
| HDCP | ![]() |
| Features | |
| Certification | FCC, CE, ErP/EuP |
| Motherboard chipset | AMD B850 |
| Motherboard form factor | Micro ATX |
| Product colour | White |
| Audio output channels | 7.1 channels |
| Windows operating systems supported | Windows 10 x64, Windows 11 x64 |
| Motherboard chipset family | AMD |
| Component for | PC |
| Audio chip | Realtek ALC1220 |
| EAN | 4711581490499 |
| Warranty | 3 years |
The ASRock B850M Steel Legend WiFi is a Micro ATX motherboard built on the AMD B850 chipset for the AM5 socket. It provides native support for AMD Ryzen 7000, 8000, and 9000 Series processors, establishing a foundation for mainstream and performance-oriented systems. The board accommodates up to 256 GB of dual-channel DDR5 memory across four DIMM slots, with supported clock speeds reaching 8000 MHz. Its power design is structured to deliver stable voltage to the CPU and other critical components during demanding operations.
This model is equipped with advanced storage and expansion capabilities, including a primary PCIe 5.0 x16 slot for a graphics card. For storage drives, it features one PCIe 5.0 M.2 slot, two additional M.2 slots, and four SATA3 ports with RAID 0, 1, and 10 support. High-speed connectivity is provided by a 2.5 Gigabit Ethernet port, integrated Wi-Fi 7, and Bluetooth 5.4. The rear I/O includes a comprehensive array of ports, such as USB 3.2 Gen 2 Type-C and Type-A, HDMI 2.1, and DisplayPort 1.4.
Key Features:- Socket AM5 for AMD Ryzen 7000/8000/9000 Series processors
- Features the AMD B850 chipset
- Micro ATX form factor for compact to mid-size builds
- Supports up to 256 GB of dual-channel DDR5 memory
- Provides one PCIe 5.0 M.2 slot, two additional M.2 slots, and four SATA3 ports
- Includes one PCIe 5.0 x16 slot for graphics cards
- Integrated 2.5 Gigabit Ethernet, Wi-Fi 7, and Bluetooth 5.4
- Features a Realtek ALC1220 audio codec
- Offers rear panel HDMI, DisplayPort, and USB Type-C connectivity
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- manual pdf (English)


