Dark mode
United Kingdom
Catalog   /   Computing   /   Components   /   Motherboards   /   ASRock

ASRock B850M Pro-A (90-MXBR8-A0UAYZ)

Photos - Motherboard ASRock B850M Pro-A
Photos 6
ASRock B850M Pro-A
+ Wi-Fiwithout Wi-Fi
Towards:home / office
Form Factor:micro-ATX
Socket:AMD AM5
Chipset:AMD B850
BIOS:Ami
RAM slots:DDR5 4 sl
RAM form factor:DIMM
RAM clock:8000 MHz
Sound (channels):7.1
Connectors:HDMI, M.2
Additional connectors:DisplayPort
Power connector:24 pin
Processor power:8+4 pin
All specifications
Specifications B850M Pro-A
Main
Featuresfor home/office
SocketAMD AM5
Form factormicro-ATX
Power phases11 / 8+2+1 /
VRM heatsink
Size (HxW)244x244 mm
Chipset
ChipsetAMD B850
BIOSAmi
UEFI BIOS
RAM
DDR54 slot(s)
Memory moduleDIMM
Operation mode2 channel
Max. clock frequency8000 MHz / + /
Max. memory256 GB
XMP
EXPO support
Drive interface
SATA 3 (6Gbps)4
M.2 connector3
M.23xPCI-E 4x
M.2 version1x5.0, 2x4.0
M.2 SSD cooling
Integrated RAID controller
Expansion slots
PCI-E 4x slots1
PCI-E 16x slots1
PCI Express5.0
Steel PCI-E connectors
Internal connections
TPM connector
USB 2.02
USB 3.2 gen12
USB C 3.2 gen11
ARGB LED strip3
RGB LED strip1
Video outputs
HDMI output
HDMI versionv.2.1
DisplayPort
DisplayPort versionv.1.4
Integrated audio
AudiochipRealtek ALC897
Sound (channels)7.1
Network interfaces
LAN (RJ-45)2.5 Gbps
LAN ports1
LAN controllerDragon RTL8125BG
External connections
USB 2.04
USB 3.2 gen12
USB 3.2 gen21
USB C 3.2 gen21
BIOS FlashBack
Power connectors
Main power socket24 pin
CPU power8+4 pin
Fan power connectors5
CPU Fan 4-pin2
Chassis/Water Pump Fan 4-pin3
Official Websiteasrock.com
Added to E-Catalogjanuary 2025
P/N
90-MXBR8-A0UAYZ

Information in model description is for reference purposes.
Before buying always check characteristics and configuration of product with online store manager
How to choose a motherboard?Motherboard is the main part of any computer. Here's how to choose the right one for work, play and entertainment

Buy ASRock B850M Pro-A

All prices 7 →
When you make a purchase through links on our site, we may earn an affiliate commission.

MB ASRock AMD AM5 B850M Pro-A 90-MXBR80-A0UAYAZ

B850M Pro-A Ergonomic design High quality products
Amazon.co.uk
Delivery: to United Kingdom
Report
£151.43

ASRock B850M Pro-A AMD Ryzen AM5 DDR5 mATX Motherboard - 90-MXBR8-A0UAYZ 90-MXBR8-A0UAYZ

Experience exceptional performance with the ASRock B850M Pro-A motherboard designed for AMD Ryzen AM5 CPUs. With support for... moreDDR5 memory, this mATX board ensures high-speed data transfer and enhanced multitasking. Featuring advanced connectivity options and durable components, it optimizes gaming and productivity for any user’s needs.
Awd-it.co.uk
Delivery: to United Kingdom
Report
£127.00

ASRock B850M Pro-A DDR5 PCIe 5.0 microATX Motherboard

Scan.co.uk
Delivery: to United Kingdom
Report
£127.49

Asrock B850M PRO-A, AMD B850, AM5, Micro ATX, 4 DDR5, HDMI, DP, 2.5G L

ComputersDeal.com
Delivery: in United Kingdom
Report
£135.42

Asrock B850M PRO-A, AMD B850, AM5, Micro ATX, 4 DDR5, HDMI, DP, 2.5G L

itsupplies.uk
Delivery: to United Kingdom
Report
£135.42

ASRock B850M Pro-A mATX Motherboard for AMD AM5 CPUs 90-MXBR8-A0UAYZ

Pro-A series is designed for enhanced stability, durability, and efficiency, it offers reliable performance, user-friendly fe... moreatures and a streamlined aesthetic, making it ideal for daily computing needs.
CCLonline.com
Delivery: to United Kingdom
Report
£127.99

ASRock ASRock B850M Pro-A

Socket AM5 Mainboard / Memory Slot 4 / DDR5 / Storage Connector 4 x S-ATA3 600 / Micro ATX / Number of PCI-X x 16 Slots 1
Idealo.co.uk
Delivery: in United Kingdom
Report
£127.99

ASRock B850M Pro-A configurations

Price for ASRock B850M Pro-A
ASRock B850M Pro-A WiFi from £138.008 offers
ASRock B850M Pro-A from £127.007 offers
Filters
Models
ASRock (features) 
server