ASRock B850 Pro RS AMD AM5 Socket Motherboard, ATX, 4x DDR5 Slots, 4x M.2 Sockets, Fitted I/O Shield, 2.5GbE LAN, Wi-Fi 6E, 1x HDMI Port / 1x USB-C

ASRock B850 PRO RS WiFi Motherboard (ATX, AMD B850, AM5)

The ASRock B850 PRO RS WiFi is an ATX motherboard designed for AMD Socket AM5 Ryzen 9000, 8000 and 7000 Series processors, combining PCIe Gen5 support, high-performance DDR5 memory, extensive storage options, and ultrafast connectivity in a durable, feature-rich platform.

Key Features

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

• AMD B850 chipset

• Robust Power Design

• 14 + 2 + 1 Phase Power Design
• 80A Dr.MOS for VCore + SOC + MISC

• Enlarged heatsink armor

• 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

• Next-Gen Expansion & Graphics

• 1 x PCIe 5.0 x16 slot (PCIE1)
• 1 x PCIe 4.0 x16 slot (PCIE2, x4 mode)
• Integrated AMD RDNA™ graphics support (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 USB 3.2 Gen1 Type-C (DP-alt mode, DP 1.4 HBR3, up to 4K 60Hz)

• Premium Audio

• Realtek ALC897 7.1 CH HD Audio Codec

• Nahimic Audio

• Ultra-Fast Storage

• 1 x Blazing M.2 (PCIe Gen5x4)
• 2 x Hyper M.2 (PCIe Gen4x4)
• 1 x Ultra M.2 (PCIe Gen3x4)
• 4 x SATA3 6.0 Gb/s connectors
• Supports NVMe SSDs as boot disks

• M.2 bottom heatsink for efficient heat dissipation

• High-Bandwidth USB Connectivity

• Front: 1 x USB 3.2 Gen2x2 Type-C (up to 20 Gb/s)
• Rear: 1 x USB 3.2 Gen2 Type-C, 1 x USB 3.2 Gen1 Type-C (DP-alt)
• 8 x USB 3.2 Gen1 (4 Rear, 4 Front)
• 10 x USB 2.0 (6 Rear, 4 Front)

• All USB ports with ESD protection

• Integrated Wi-Fi 6E & 2.5G LAN

• 802.11axe Wi-Fi 6E module with dual-band 2x2 and extended 6GHz band support
• Bluetooth 5.2
• 2.5 Gigabit LAN (Dragon RTL8125BG) with Dragon 2.5G LAN software

• Supports MU-MIMO

• User-Friendly Features

• Flexible integrated I/O shield
• BIOS Flashback button
• ASRock Auto Driver Installer
• ASRock Post Status Checker
• ASRock Polychrome SYNC
• Smart Fan Speed Control on multiple fan headers

Specifications

Platform

Unique Features

• Superb Productivity
• PCIe Gen5 (Graphics, M.2)
• Dual Channel DDR5
• Rock-Solid Durability
• 14+2+1 Power Phase, 80A Dr.MOS for VCore+SOC+MISC with enlarged heatsink armor
• Flexible integrated 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

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

PCIe 5.0 Slot Behavior (PCIE1):
- Gen5x16 with Ryzen 9000 and 7000 series processors
- Gen4x8 with 8000 (Phoenix 1) series processors
- Gen4x4 with 8000 (Phoenix 2) series processors

Memory

Expansion Slots

• PCIE1 with 15µ gold contacts
• If M2_3 is occupied, PCIE2 will be disabled
• Supports NVMe SSDs as boot disks

Graphics

• 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 USB 3.2 Gen1 Type-C with DP 1.4 HBR3 (DP-alt mode supports DP 1.4a, up to 4K 60Hz)

Audio

• 7.1 CH HD Audio (Realtek ALC897 Audio Codec)
• Nahimic Audio

LAN

• 2.5 Gigabit LAN 10/100/1000/2500 Mb/s (Dragon RTL8125BG)
• Dragon 2.5G LAN Software:
• Smart Auto Adjust Bandwidth Control
• Visual User-Friendly UI
• Visual Network Usage Statistics
• Optimized defaults for Game, Browser, and Streaming modes
• User customized priority control

Wireless LAN & Bluetooth

• 802.11axe Wi-Fi 6E module
• Supports IEEE 802.11a/b/g/n/ac/ax/axe
• Dual-Band 2x2 with extended 6GHz band support
• Wi-Fi 6E (6GHz band) supported by Microsoft Windows 11 (availability depends on regional regulations and Windows/software updates)
• Requires 6GHz compatible router for 6E functionality
• 2 x antennas for 2 x (Transmit) x 2 (Receive) diversity
• Supports Bluetooth 5.2
• Supports MU-MIMO

USB

From CPU (Rear):
- 1 x USB 3.2 Gen2 Type-C
- 1 x USB 3.2 Gen1 Type-C
- 2 x USB 3.2 Gen1 Type-A

From Chipset:
- Front:
- 1 x USB 3.2 Gen2x2 Type-C
- 4 x USB 3.2 Gen1 Type-A (via headers)
- 4 x USB 2.0 (via headers)
- Rear:
- 2 x USB 3.2 Gen1 Type-A
- 6 x USB 2.0

All USB ports support ESD protection.

Rear Panel I/O

• 2 x Antenna ports
• 1 x HDMI port
• 1 x USB 3.2 Gen2 Type-C (10 Gb/s)
• 1 x USB 3.2 Gen1 Type-C (DP-alt, DP 1.4a)
• 4 x USB 3.2 Gen1 Type-A
• 6 x USB 2.0
• 1 x RJ-45 LAN port
• 1 x BIOS Flashback Button
• HD Audio jacks: Line In / Front Speaker / Microphone

Storage

From CPU:
- 1 x Blazing M.2 (M2_1, Key M, type 2280, PCIe Gen5x4, 128 Gb/s)
- 1 x Hyper M.2 (M2_2, Key M, type 2280, PCIe Gen4x4, 64 Gb/s)

From Chipset:
- 1 x Hyper M.2 (M2_3, Key M, type 2230/2242/2260/2280, PCIe Gen4x4, 64 Gb/s)
- 1 x Ultra M.2 (M2_4, Key M, type 2280, PCIe Gen3x4, 32 Gb/s)
- 2 x SATA3 6.0 Gb/s (chipset)
- 2 x SATA3 6.0 Gb/s (ASMedia ASM1061)

Storage Notes:
- Supports NVMe SSDs as boot disks
- M2_1 is first priority for M.2 installation
- M2_1:
- Gen5x4 with Ryzen 9000 and 7000
- Gen4x4 with 8000 (Phoenix 1 & Phoenix 2)
- M2_2:
- Gen4x4 with 9000 and 7000
- Gen4x4 with 8000 (Phoenix 1)
- Gen4x2 with 8000 (Phoenix 2)
- If M2_3 is occupied, PCIE2 will be disabled
- If SATA3_1 or SATA3_2 is occupied, M2_4 downgrades to Gen3x2

RAID

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

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)
• 4 x Chassis Fan connectors (4-pin, Smart Fan Speed Control)
• 1 x AIO Pump Fan connector (4-pin, Smart Fan Speed Control)
• 1 x 24-pin ATX power connector
• 2 x 8-pin 12V power connectors (Hi-Density Power Connector)
• 1 x Front panel audio connector
• 2 x USB 2.0 headers (up to 4 USB 2.0 ports)
• 2 x USB 3.2 Gen1 headers (up to 4 USB 3.2 Gen1 ports)
• 1 x Front panel USB 3.2 Gen2x2 Type-C header (20 Gb/s)

Power & Fan Support:
- Total support up to 12V/3A, 36W LED strips
- Total support up to 5V/3A, 15W LED strips
- CPU_FAN1: up to 1A (12W)
- CPU_FAN2, CHA_FAN1–4, AIO_PUMP: up to 3A (36W)
- CPU_FAN2, CHA_FAN1–4, AIO_PUMP auto-detect 3-pin or 4-pin fans

BIOS

• 256Mb AMI UEFI Legal BIOS with GUI support

Software & UEFI

Software:

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

UEFI:

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

Operating System

• 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

Highlighted Technologies

• 14+2+1 Power Phase Design + Dr.MOS
  Vcore with Dr.MOS design delivers smoother, cleaner power to the CPU.

• Blazing M.2 (PCIe Gen5x4)
  Supports up to 4 x NVMe M.2 SSDs, with one slot ready for the latest PCI Express 5.0 standard.

• USB Type-C (DP-Alt Mode)
  USB Alternate Mode enables both data transfer and DisplayPort output through a single USB Type-C cable.

• M.2 Bottom Heatsink
  Helps dissipate heat through the motherboard PCB to maximize performance and maintain system stability.

• Front USB 3.2 Gen2x2 Type-C
  Delivers up to 20 Gb/s data transfer, 2x faster than the previous generation.

• Wi-Fi 6E (802.11axe)
  Designed to provide better, faster internet traffic with lower latency (subject to OS, regional regulations, and compatible router).