Description
ASROCK B850M Steel Legend WiFi motherboard in micro ATX format with AM5 socket, designed for AMD Ryzen series 7000, 8000 and 9000 processors. Supports up to 256 GB of DDR5 memory across four DIMM slots, with dual-channel operation and compatibility with both ECC and non-ECC modules. Offers seven compatible storage units spanning HDD and SSD, with PCI Express 4.0, PCI Express 5.0 and SATA III interfaces, plus RAID levels 0, 1 and 10. Includes support for graphical output with a maximum resolution of 3840 x 2160 pixels and HDCP technology.
Specifications
Processor
- Processor manufacturer: AMD
- Processor socket: Socket AM5
- Compatible processor series: AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
- Supported processor sockets: Socket AM5
Memory
- Supported memory types: DDR5-SDRAM
- Number of memory slots: 4
- Memory slots type: DIMM
- Memory channels: Dual-channel
- ECC сompatibility: ECC & Non-ECC
- Maximum internal memory: 256 GB
- Unbuffered memory: Yes
Storage controllers
- Supported storage drive types: HDD & SSD
- Supported storage drive interfaces: PCI Express 4.0, PCI Express 5.0, SATA III
- Number of storage drives supported: 7
- RAID support: Yes
- RAID levels: 0, 1, 10
Graphics
- Parallel processing technology support: Not supported
- Maximum resolution: 3840 x 2160 pixels
- HDCP: Yes
Internal I/O
- USB 2.0 connectors: 2
- USB 3.2 Gen 1 (3.1 Gen 1) connectors: 3
- Number of SATA III connectors: 4
- Front panel audio connector: Yes
- ATX Power connector (24-pin): Yes
- CPU fan connector: Yes
- Number of CPU fan connectors: 2
- Number of chassis fan connectors: 3
- EPS power connector (8-pin): Yes
- Number of EPS power connectors (8-pin): 1
- TPM connector: Yes
- 12V power connector: Yes
- RGB LED pin header: Yes
- Number of RGB LED pin headers: 1
Rear panel I/O ports
- USB 2.0 ports quantity: 4
- USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity: 2
- 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
- Ethernet LAN (RJ-45) ports: 1
- HDMI ports quantity: 1
- HDMI version: 2.1
- DisplayPorts quantity: 1
- DisplayPort version: 1.4
- Headphone outputs: 3
- Line-in: Yes
- Microphone in: Yes
- WiFi-AP antenna jack: 2
- USB connector type: USB Type-A, USB Type-C
Network
- Ethernet LAN: Yes
- Ethernet interface type: 2.5 Gigabit Ethernet
- LAN controller: Dragon RTL8125BG
- Wi-Fi: Yes
- Top Wi-Fi standard: Wi-Fi 7 (802.11be)
- 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: Yes
- Bluetooth version: 5.4
Features
- Motherboard chipset: AMD B850
- Audio chip: Realtek ALC1220
- Audio output channels: 7.1 channels
- Product colour: White
- Component for: PC
- Motherboard form factor: micro ATX
- Motherboard chipset family: AMD
- Windows operating systems supported: Windows 10 x64, Windows 11 x64
- Certification: FCC, CE, ErP/EuP
Expansion slots
- PCI Express x4 (Gen 4.x) slots: 1
- PCI Express x16 (Gen 5.x) slots: 1
- Number of M.2 (M) slots: 3
- 1st M.2 largest key size: 2280
- 1st M.2 highest PCI Express generation: 5.0
- 2nd M.2 largest key size: 2280
- 2nd M.2 highest PCI Express generation: 4.0
- 3rd M.2 largest key size: 2280
- 3rd M.2 highest PCI Express generation: 4.0
BIOS
- BIOS type: UEFI AMI
- BIOS memory size: 256 Mbit
Weight & dimensions
- Width: 244 mm
- Depth: 244 mm
Packaging content
- Cables included: SATA
- Antenna included: Yes
- Screws included: Yes
- M.2 standoff included: Yes
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