The ASRock B850M Pro RS WiFi is a Micro-ATX motherboard built on the AMD B850 chipset, designed for use with AMD Ryzen 7000, 8000, and 9000 Series processors on the AM5 socket. With support for up to 256GB of DDR5 memory across four DIMM slots in dual-channel configuration, including overclocked speeds of 8000+ MHz, this board is aimed at users looking for a capable and modern platform. The silver and black design fits well in a variety of builds.
Expansion, Storage and Connectivity
The board features one PCIe 5.0 x16 slot for the primary graphics card, alongside three M.2 slots for fast storage. The first M.2 slot runs at PCIe 5.0, while the second and third operate at PCIe 4.0, all supporting up to 2280 form factor drives. Four SATA III connectors provide additional storage options. For peripheral connectivity, the board offers a broad range of USB ports including USB 3.2 Gen 2 Type-A and Type-C ports, multiple USB 3.2 Gen 1 ports, and several USB 2.0 connections both on the rear panel and via internal headers.
Wireless, Audio and Display
Wireless performance is handled by Wi-Fi 6E (802.11ax) with two antenna jacks and Bluetooth 5.2, complemented by a wired 2.5G LAN port powered by the Dragon RTL8125BG controller. Audio is managed by the Realtek ALC897 chip supporting 7.1 channel output. Display outputs include one HDMI 2.1 port and one DisplayPort 1.4, supporting resolutions up to 3840 x 2160 pixels.
Product number manufacturer:
90-MXBR70-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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