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

ASRock B850M PRO RS WiFi Motherboard (AMD B850, AM5, mATX)

The ASRock B850M PRO RS WiFi is a Micro ATX AMD B850 motherboard designed for AMD Socket AM5 Ryzen 9000, 8000 and 7000 Series processors, combining PCIe Gen5 support, DDR5 memory, fast storage, and integrated WiFi 6E for a compact, high-performance build.

Key Features

• Socket & CPU Support

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

• Power Design

• 8 + 2 + 1 power phase design
• Dr.MOS for VCore + SOC + MISC

• Vcore with Dr.MOS design for smoother power delivery to the CPU

• Memory

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

• Supports XMP and EXPO memory profiles

• Graphics & Display Outputs

• 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)

• Expansion & Slots

• 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 Socket (Key E) for type 2230 WiFi/BT PCIe module

• 15µ gold contact in VGA PCIe Slot (PCIE1)

• High-Speed Storage

• 1 x Blazing M.2 (M2_1, PCIe Gen5x4, type 2280)
• 2 x Hyper M.2 (M2_2 & M2_3, PCIe Gen4x4, type 2280)
• 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 devices

• Supports up to 3 x NVMe M.2 SSDs, one supporting PCIe 5.0

• Connectivity

• Realtek 2.5G LAN (Dragon RTL8125BG)
• 802.11axe WiFi 6E module
• Bluetooth 5.2

• MU-MIMO support

• USB Connectivity

• Rear:
  • 1 x USB 3.2 Gen2 Type-C
  • 1 x USB 3.2 Gen2 Type-A
  • 2 x USB 3.2 Gen1 Type-A
  • 4 x USB 2.0
• Front (via headers):
  • 1 x USB 3.2 Gen1 Type-C
  • 4 x USB 3.2 Gen1 Type-A
  • 4 x USB 2.0

• All USB ports support ESD protection

• Audio

• Realtek ALC897 7.1 CH HD Audio Codec

• Nahimic Audio

• Cooling & Heatsinks

• Supports M.2 bottom heatsink for improved SSD thermal dissipation

• Smart Fan Speed Control on CPU and chassis fan headers

• Build & Ease of Use

• Micro ATX form factor (9.6" x 9.6" / 24.4 cm x 24.4 cm)
• Pre-installed I/O shield for easier installation
• BIOS Flashback button for easy BIOS updates

• ASRock Auto Driver Installer

• Lighting & Headers

• 1 x RGB LED header
• 3 x Addressable LED headers

• LED strip power support: up to 12V/3A (36W) and 5V/3A (15W)

• Software & UEFI

• ASRock Motherboard Utility (A-Tuning)
• ASRock Dragon 2.5G LAN software
• ASRock Polychrome SYNC
• ASRock EZ Mode & Full HD UEFI
• ASRock Instant Flash

Platform & Chipset

Expansion & Graphics

Memory

Storage

Note: If M2_3 is occupied, the PCIe 4.0 x4 slot (PCIE2) will be disabled.

Networking & Wireless

Audio

USB & Rear I/O

USB Configuration

• CPU:
• 1 x USB 3.2 Gen2 Type-C (rear)
• 1 x USB 3.2 Gen2 Type-A (rear)
• Chipset (front via headers):
• 1 x USB 3.2 Gen1 Type-C
• 6 x USB 3.2 Gen1 Type-A (2 rear, 4 front)
• 8 x USB 2.0 (4 rear, 4 front)
• 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 2.5G LAN port
• 1 x BIOS Flashback button
• HD Audio jacks (Line In / Front Speaker / Microphone)

Internal Headers & Connectors

• 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 USB 3.2 Gen1 Type-C header

Power & Fan Notes:

• Supports up to 12V/3A (36W) LED strip total
• Supports up to 5V/3A (15W) LED strip total
• CPU_FAN1: up to 1A (12W)
• CPU_FAN2 & CHA_FAN1–3: up to 3A (36W) each
• CPU_FAN2 & CHA_FAN1–3 can auto-detect 3-pin or 4-pin fans

BIOS & Software

Operating System & Certifications

• OS Support
• Microsoft Windows 10 64-bit

• Microsoft Windows 11 64-bit

• Certifications

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

Included Accessories

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

Unique & Convenience Features

• Superb productivity platform with PCIe Gen5 (graphics, M.2) and Dual Channel DDR5
• Rock-solid durability with 8+2+1 Power Phase Dr.MOS design
• Pre-installed I/O shield for faster, easier assembly
• Ultrafast connectivity with 2.5G LAN and WiFi 6E
• EZ Update via BIOS Flashback button and Auto Driver Installer
• EZ Troubleshooter with ASRock Post Status Checker