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ASRock B850M PRO RS WIFI AM5 AMD B850 Micro ATX Motherboard

OPEN BOX Product Type
  • Supports AMD Socket AM5 Ryzen 9000, 8000 and 7000 Series Processors
  • 8+2+1 Phase Power Design, Dr.MOS for VCore+SOC+MISC
  • 4 x DDR5 DIMMs Supports Dual Channel, up to 8000+ (OC)
  • 1 PCIe 5.0 x16, 1 PCIe 4.0 x4
  • Graphics Output Options: 1 HDMI, 1 DisplayPort
  • Realtek ALC897 7.1 CH HD Audio Codec, Nahimic Audio
  • 1 Blazing M.2 (PCIe Gen5x4), 2 Hyper M.2 (PCIe Gen4x4), 4 SATA3
  • 1 USB 3.2 Gen2 Type-C (Rear), 1 USB 3.2 Gen2 Type-A (Rear), 1 USB 3.2 Gen1 Type-C (Front), 6 USB 3.2 Gen1 (2 Rear, 4 Front), 8 USB 2.0 (4 Rear, 4 Front)
  • Realtek 2.5G LAN
  • 802.11axe WiFi 6E +Bluetooth
  • Supports M.2 Bottom Heatsink, BIOS Flashback
🔥Don't forget your OS, we have Windows 11 OEM, Download and USB versions available
The Open Box Product Disclaimer applies to this product.
Specs

Learn more about the ASRock B850M PRO RS WIFI

Model
Brand ASRock
Model B850M PRO RS WIFI
Supported CPU
CPU Socket Type AM5
CPU Type Ryzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series
Chipsets
Chipset AMD B850
Memory
Number of Memory Slots 4x288pin (DDR5)
Memory Standard Up to 8000+(OC)
Maximum Memory Supported 256GB
Channel Supported Dual Channel
ECC Supported Yes
Buffer Supported Un-buffered
Expansion Slots
PCI Express 5.0 x16 1 x PCIe 5.0 x16 Slot (PCIE1), supports x16 mode*

* PCIE1 will run at Gen5x16 with 9000 and 7000 series processors, Gen4x8 with 8000 (Phoenix 1) series processors and Gen4x4 with 8000 (Phoenix 2) series processors.
* If M2_3 is occupied, PCIE2 will be disabled.
* Supports NVMe SSD as boot disks
- 15µ Gold Contact in VGA PCIe Slot (PCIE1)
PCI Express 4.0 x16 1 x PCIe 4.0 x4 Slot (PCIE2), supports x4 mode*
Storage Devices
Serial ATA (SATA) 4 x SATA 6Gb/s
M.2 CPU:
- 1 x Blazing M.2 Socket (M2_1, Key M), supports type 2280 PCIe Gen5x4 (128 Gb/s) mode*
Chipset:
- 1 x Hyper M.2 Socket (M2_2, Key M), supports type 2280 PCIe Gen4x4 (64 Gb/s) mode*
- 1 x Hyper M.2 Socket (M2_3, Key M), supports type 2280 PCIe Gen4x4 (64 Gb/s) mode*

* Supports NVMe SSD as boot disks
* M2_1 is the first priority for M.2 installation.
* M2_1 will run at Gen5x4 with 9000 and 7000 series processors and Gen4x4 with 8000 (Phoenix 1 and Phoenix 2) series processors.
* M2_3 will run at Gen4x4 with 9000 and 7000 series processors, Gen4x4 with 8000 (Phoenix 1) series processors and Gen4x2 with 8000 (Phoenix 2) series processors.
* If M2_3 is occupied, PCIE2 will be disabled.
SATA RAID Supports RAID 0, RAID 1 and RAID 10 for SATA storage devices
Supports RAID 0, RAID 1 and RAID 10 for M.2 NVMe storage devices*
* Requires additional M.2 NVMe expansion cards to support RAID 10
Onboard Audio
Audio Chipset Realtek ALC897
Audio Channels 7.1 Channels
Onboard LAN
LAN Chipset Dragon RTL8125BG
Max LAN Speed 2.5Gbps
Wireless LAN Wi-Fi 802.11 ax
Bluetooth Bluetooth 5.2
Rear Panel Ports
Back I/O Ports 2 x Antenna Ports
1 x HDMI Port
1 x DisplayPort 1.4
1 x USB 3.2 Gen2 Type-A Port (10 Gb/s)
1 x USB 3.2 Gen2 Type-C Port
2 x USB 3.2 Gen1 Ports
4 x USB 2.0 Ports
1 x RJ-45 LAN Port
1 x BIOS Flashback Button
HD Audio Jacks: Line in / Front Speaker / Microphone
Internal I/O Connectors
Onboard USB 2 x USB 2.0 Headers (Support 4 USB 2.0 ports)
2 x USB 3.2 Gen1 Headers (Support 4 USB 3.2 Gen1 ports)
1 x Front Panel Type C USB 3.2 Gen1 Header
Other 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 Front Panel Audio Connector
* Supports in total up to 12V/3A, 36W LED Strip
** Support in total up to 5V/3A, 15W LED Strip
*** CPU_FAN1 supports the fan power up to 1A (12W).
*** CPU_FAN2 and CHA_FAN1~3 support the fan power up to 3A (36W).
*** CPU_FAN2 and CHA_FAN1~3 can auto detect if 3-pin or 4-pin fan is in use.
Physical Spec
Form Factor Micro ATX
Dimensions (W x L) 9.6" x 9.6"
Power Pin 1 x 24 pin ATX Power Connector
1 x 8 pin 12V Power Connector (Hi-Density Power Connector)
1 x 4 pin 12V Power Connector (Hi-Density Power Connector)
Software Feature
BIOS Feature 256Mb AMI UEFI Legal BIOS with GUI support
Software Software
- ASRock Motherboard Utility (A-Tuning)
- ASRock Dragon 2.5G LAN Software
- ASRock Polychrome SYNC
* These utilities can be downloaded from ASRock Live Update & APP Shop.
UEFI
- ASRock EZ Mode
- ASRock Full HD UEFI
- ASRock Auto Driver Installer
- ASRock Instant Flash
Windows 11 Windows OS 10 64-bit / 11 64-bit
Features
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 Module
EZ Update
- BIOS Flashback Button
- ASRock Auto Driver Installer
EZ Troubleshooter
- ASRock Post Status Checker
Additional Information
Date First Available March 20, 2025

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