The ASRock B850M Pro-A is a Micro ATX motherboard designed for AMD AM5 Ryzen 9000, 8000, and 7000 Series processors. It features the AMD B850 chipset, 4 DDR5 DIMM slots supporting up to 8000+ MHz (OC), and an 8+2+1 phase power design with Dr.MOS for stable and efficient power delivery.
The motherboard provides PCIe 5.0 x16 graphics support, one PCIe Gen5 x4 and two PCIe Gen4 x4 M.2 slots, four SATA3 connectors, 2.5G LAN, and extensive USB connectivity. It also features a 6-layer PCB, BIOS Flashback, reinforced PCIe 5.0 graphics slot, and Realtek 7.1-channel audio.
Specifications
Specifications
Details
Model
ASRock B850M Pro-A
Part Number
90-MXBR8-A0UAYZ
Socket
AMD AM5
Chipset
AMD B850
CPU Support
AMD Ryzen 9000, 8000 and 7000 Series
Form Factor
Micro ATX
Power Phase
8+2+1 Phase, Dr.MOS
Memory
4 × DDR5 DIMM
Maximum Memory
256GB
Memory Speed
Up to DDR5 8000+ MHz (OC)
Memory Support
AMD EXPO / Intel XMP
PCIe x16 Slot
1 × PCIe 5.0 x16
PCIe x4 Slot
1 × PCIe 4.0 x4
M.2 Slots
1 × PCIe Gen5 x4, 2 × PCIe Gen4 x4
SATA
4 × SATA3 6.0 Gb/s
LAN
Realtek Dragon 2.5Gb LAN
Wi-Fi
Not Included
Audio
Realtek ALC897 7.1 CH HD Audio
Video Outputs
1 × HDMI 2.1, 1 × DisplayPort 1.4
Rear USB
1 × USB 3.2 Gen2 Type-A, 1 × USB 3.2 Gen2 Type-C, 2 × USB 3.2 Gen1, 4 × USB 2.0
BIOS
BIOS Flashback
PCB
6-Layer PCB
Dimensions
244 × 244 mm
Package Weight
1.21 kg
Package Dimensions
300 × 260 × 60 mm
Volumetric Weight (FedEx)
0.94 kg
Chargeable Weight (FedEx)
1.5 kg
Country of Origin
China
HS Code
84733020
Reviews
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Delivery
We offer free delivery to Dubai, Abu Dhabi, Al Ain, Sharjah, Ajman, Ras Al Khaimah, Fujairah, Umm Al Quwain, UAE for ASRock B850M Pro-A AM5 Micro ATX Motherboard. Delivery available to Saudi Arabia, Oman, Qatar, Kuwait, and Bahrain.