The ASRock B850M Pro-A WiFi is a Micro-ATX motherboard built around the AMD B850 chipset, designed for use with AMD Ryzen 7000, 8000, and 9000 Series processors on the AM5 socket. Finished in black, this compact board measures 244 x 244 mm and offers a solid foundation for both everyday computing and more demanding workloads. It supports DDR5 memory across four DIMM slots with dual-channel configuration and a maximum capacity of 256 GB, with overclocking speeds reaching 8000+ MHz.
Storage and Expansion
The ASRock B850M Pro-A WiFi provides extensive storage options, including three M.2 slots supporting sizes up to 2280. The primary M.2 slot runs on PCIe 5.0, while the second and third slots operate on PCIe 4.0. Four SATA III connectors add further storage flexibility. For discrete graphics, a single PCIe 5.0 x16 slot is available, ensuring compatibility with the latest generation graphics cards.
Connectivity and Wireless Features
This motherboard comes well equipped in terms of connectivity. It features Wi-Fi 6E (802.11ax) and Bluetooth 5.2 for wireless communication, alongside a 2.5G wired LAN port powered by the Dragon RTL8125BG controller. USB connectivity includes USB 3.2 Gen 2 Type-A and Type-C ports, multiple USB 3.2 Gen 1 ports, and USB 2.0 headers. Display output is handled through one HDMI 2.1 port and one DisplayPort 1.4, supporting resolutions up to 3840 x 2160 pixels. Audio is managed by the Realtek ALC897 chip with 7.1 channel output support.
Product number manufacturer:
90-MXBR90-A0UAYZ
Audio
BIOS
Connectivity
USB 3.2 (Gen 1) type A ports:
6
USB 3.2 (Gen 1) type C ports:
1
USB 3.2 (Gen 2) type A ports:
1
USB 3.2 (Gen 2) type C ports:
1
Internal I/O
1st M.2 maximum slot size:
2280
1st M.2 slot PCI Express generation:
5.0
2nd M.2 maximum slot size:
2280
2nd M.2 slot PCI Express generation:
4.0
3rd M.2 maximum slot size:
2280
3rd M.2 slot PCI Express generation:
4.0
ATX Power connector (24-pin):
Chassis fan connector(s):
3
EPS power connector (8-pin):
Front panel audio connector:
USB 3.1 (3.1 Gen 2) connectors:
0
USB 3.1 (Gen 1) header(s):
3
Memory
Supported memory clock speeds (OC):
8000+ (OC) MHz
Networking
Network technology (wired):
Packaging content
Physical characteristics
Processor
Compatible processor series:
AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
Sockets
Technical details
Video
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