ASRock B850M Pro-A WiFi AMD AM5 Socket Motherboard, Micro-ATX, 4x DDR5 Slots, 3x M.2 Sockets, 2.5GbE LAN, Wi-Fi 6E, 1x DisplayPort / 1x HDMI Port

ASRock B850M PRO RS WiFi Micro ATX Motherboard

The ASRock B850M PRO RS WiFi is a Micro ATX motherboard designed for AMD Socket AM5 Ryzen 9000, 8000 and 7000 Series processors, delivering superb productivity, ultrafast connectivity, and rock-solid durability in a compact 9.6" x 9.6" form factor.

Key Features

• AMD Socket AM5 Support
• Supports Ryzen 9000, 8000 and 7000 Series Processors

• 8+2+1 Power Phase Design with Dr.MOS for VCore + SOC + MISC

• High-Speed DDR5 Memory

• 4 x DDR5 DIMM slots
• Dual Channel DDR5 up to 8000+ (OC)
• Supports DDR5 ECC/non-ECC, un-buffered memory
• Max system memory capacity: 256GB

• Supports XMP and EXPO memory profiles

• PCIe & Expansion

• 1 x PCIe 5.0 x16 slot (PCIE1), supports x16 mode
• 1 x PCIe 4.0 x4 slot (PCIE2), supports x4 mode
• 1 x M.2 (Key E) for type 2230 WiFi/BT PCIe module
• PCIe Gen5 support for graphics and M.2

• 15µ Gold Contact in VGA PCIe Slot (PCIE1)

• Advanced Storage

• 1 x Blazing M.2 (PCIe Gen5x4)
• 2 x Hyper M.2 (PCIe Gen4x4)
• 4 x SATA3 6.0 Gb/s connectors
• Supports NVMe SSDs as boot disks

• Supports RAID 0, 1, 10 for SATA and M.2 NVMe storage

• Graphics Output Options

• Integrated AMD RDNA graphics (actual support may vary by CPU)
• 1 x HDMI 2.1 TMDS/FRL 8G compatible (HDR, HDCP 2.3, up to 4K 120Hz)

• 1 x DisplayPort 1.4 with DSC (HDCP 2.3, up to 4K 120Hz)

• Audio & Networking

• Realtek ALC897 7.1 CH HD Audio Codec
• Nahimic Audio
• Realtek Dragon RTL8125BG 2.5G LAN (10/100/1000/2500 Mb/s)

• Dragon 2.5G LAN software with bandwidth control and profiles

• WiFi 6E & Bluetooth

• 802.11axe Wi-Fi 6E module
• Dual-band 2x2 with extended 6GHz band support
• Supports Bluetooth 5.2 and MU-MIMO
• Includes 2 x antennas
• Wi-Fi 6E module supported by Windows 11 only (no driver for Windows 10)

• 6GHz availability depends on regional regulations and requires a 6GHz compatible router

• Connectivity & I/O

• Front and rear USB 3.2 Type-C
• Multiple USB 3.2 Gen2 / Gen1 and USB 2.0 ports
• Pre-installed I/O shield

• BIOS Flashback button

• Thermal & Build Features

• M.2 bottom heatsink for efficient SSD cooling
• Smart Fan Speed Control for CPU and chassis fans

• Supports 12V RGB and 5V addressable LED strips

• User-Friendly Utilities

• BIOS Flashback
• ASRock Auto Driver Installer
• ASRock Post Status Checker
• ASRock UEFI with EZ Mode and Full HD interface
• ASRock Polychrome SYNC lighting software

Specifications

Platform

Unique Features

• Superb Productivity
• PCIe Gen5 (Graphics, M.2)
• Dual Channel DDR5
• Rock-Solid Durability
• 8+2+1 Power Phase, Dr.MOS for VCore+SOC+MISC
• Pre-Installed I/O Shield
• Ultrafast Connectivity: 2.5G LAN, 802.11axe Wi-Fi 6E
• EZ Update: BIOS Flashback Button, ASRock Auto Driver Installer
• EZ Troubleshooter: ASRock Post Status Checker

CPU Support

Memory

Expansion Slots

PCIe Lane Behavior

• PCIE1:
• Gen5x16 with 9000 and 7000 Series processors
• Gen4x8 with 8000 (Phoenix 1) Series processors

• Gen4x4 with 8000 (Phoenix 2) Series processors

• If M2_3 is occupied, PCIE2 will be disabled.

• Supports NVMe SSD as boot disks.

Graphics

Audio

LAN

Wireless LAN & Bluetooth

USB

All USB ports support ESD Protection.

Rear Panel I/O

• 2 x Antenna mounting points
• 1 x HDMI port
• 1 x DisplayPort 1.4
• 1 x USB 3.2 Gen2 Type-A (10 Gb/s)
• 1 x USB 3.2 Gen2 Type-C
• 2 x USB 3.2 Gen1
• 4 x USB 2.0
• 1 x RJ-45 LAN port
• 1 x BIOS Flashback button
• HD Audio jacks: Line In / Front Speaker / Microphone

Storage

Storage Notes

• M2_1 is the first priority for M.2 installation.
• M2_1:
• Gen5x4 with 9000 and 7000 Series processors
• Gen4x4 with 8000 (Phoenix 1 & Phoenix 2) Series processors
• M2_3:
• Gen4x4 with 9000 and 7000 Series processors
• Gen4x4 with 8000 (Phoenix 1) Series processors
• Gen4x2 with 8000 (Phoenix 2) Series processors
• If M2_3 is occupied, PCIE2 will be disabled.
• Supports NVMe SSDs as boot disks.

RAID

• Supports RAID 0, 1, 10 for SATA storage devices
• Supports RAID 0, 1, 10 for M.2 NVMe storage devices
• Requires additional M.2 NVMe expansion cards to support RAID 10

Connectors & Headers

• 1 x SPI TPM Header
• 1 x Power LED and Speaker Header
• 1 x RGB LED Header
• 3 x Addressable LED Headers
• 2 x CPU Fan Connectors (4-pin, Smart Fan Speed Control)
• 3 x Chassis Fan Connectors (4-pin, Smart Fan Speed Control)
• 1 x 24-pin ATX Power Connector
• 1 x 8-pin 12V Power Connector (Hi-Density)
• 1 x 4-pin 12V Power Connector (Hi-Density)
• 1 x Front Panel Audio Connector
• 2 x USB 2.0 Headers (support 4 x USB 2.0 ports)
• 2 x USB 3.2 Gen1 Headers (support 4 x USB 3.2 Gen1 ports)
• 1 x Front Panel Type-C USB 3.2 Gen1 Header

Power & LED Support

• Supports in total up to 12V/3A, 36W LED strip
• Supports in total up to 5V/3A, 15W LED strip

Fan Power

• CPU_FAN1: up to 1A (12W)
• CPU_FAN2, CHA_FAN1~3: up to 3A (36W) each
• CPU_FAN2 and CHA_FAN1~3 can auto-detect 3-pin or 4-pin fans

BIOS

• 256Mb AMI UEFI Legal BIOS with GUI support

Software & UEFI

• ASRock Motherboard Utility (A-Tuning)
• ASRock Dragon 2.5G LAN Software
• ASRock Polychrome SYNC

UEFI Features

• ASRock EZ Mode
• ASRock Full HD UEFI
• ASRock Auto Driver Installer
• ASRock Instant Flash

Operating System Support

• Microsoft Windows 10 64-bit
• Microsoft Windows 11 64-bit

(Wi-Fi 6E module supported by Windows 11 only.)

Certifications

• FCC
• CE
• ErP/EuP ready (requires ErP/EuP ready power supply)

Included Accessories

• 2 x SATA data cables
• 2 x ASRock WiFi 2.4/5/6 GHz antennas

Highlighted Technologies

• 8+2+1 Power Phase Design + Dr.MOS
  Vcore with Dr.MOS design delivers smoother, more efficient power to the CPU.

• Blazing M.2 (PCIe Gen5x4)
  Supports up to 3 x NVMe M.2 SSDs, including one that accommodates PCI Express 5.0.

• Pre-Installed I/O Shield
  Speeds up installation and simplifies system assembly.

• M.2 Bottom Heatsink
  Dissipates heat through the PCB to help maintain SSD performance and system stability.

• USB 3.2 Type-C (Front & Rear)
  High-speed, reversible USB Type-C connectivity for both front panel and rear I/O.

• WiFi 6E (802.11axe)
  Designed for faster, lower-latency wireless connectivity where 6GHz is available.