ASRock B850M Pro-A (90-MXBR8-A0UAYZ)
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ASRock B850M Pro-A
+ Wi-Fiwithout Wi-Fi
Towards:home / office
Form Factor:micro-ATX
Socket: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
Compact microATX motherboard based on the AMD B850 chipset. It belongs to the mid-range class and is part of the ASRock Pro lineup for 2025, offering a practical solution for creating compact mid-level systems with modern expansion capabilities at an affordable price. With support for socket AM5, it ensures full compatibility with Ryzen 9000/8000/7000 series processors, while the 8+2+1-phase power system with Dr.MOS transistors is perfect for installing mid-budget processors like Ryzen 5/Ryzen 7 under moderate loads.
Notable features of the ASRock B850M Pro-A include support for DDR5 memory with overclocking capabilities in four DIMM slots using Dual Channel technology, which enhances bandwidth. The board is equipped with four slots for DDR5 RAM with a maximum frequency exceeding 8000 MHz and supports AMD EXPO profiles, allowing the user to quickly and easily overclock memory to optimal levels.
The storage system includes one M.2 Gen5 slot for high-speed NVMe drives and two M.2 Gen4 slots for mid-range SSDs, as well as four SATA3 ports for connecting traditional drives. As for connectivity, the board features one PCIe 5.0 x16 slot for a graphics card and an additional PCIe 4.0 slot for expansion cards. Video outputs include HDMI and DisplayPort connectors. Additional features include a Realtek 2.5G LAN controller for high-speed wired connection and an M.2 Key E slot for Wi-Fi module installation. An alternative model with pre-installed Wi-Fi is also available in the market.
All specifications
Specifications B850M Pro-A
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E-Catalog UK editor, Motherboards
Valerii Lenko, edited 10.11.2025
The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog ASRock 2026 - new arrivals, bestsellers, and the most relevant models ASRock.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog ASRock 2026 - new arrivals, bestsellers, and the most relevant models ASRock.
Buy ASRock B850M Pro-A
All prices 21 →When you make a purchase through links on our site, we may receive a affiliate commission.
| £99.98 |  | ||||
ASRock B850M Pro-A mATX Motherboard for AMD AM5 CPUs 90-MXBR80-A0UAYZ | £102.99 |  | |||
| £102.99 |  | ||||
Asrock B850M PRO-A AMD B850 DDR5 Micro-ATX Socket AM5 Motherboard | £104.99 |  | |||
Asrock 90-MXBR8-A0UAYZ | £107.49 |  | |||
16 more offer(s)
Series ASRock PRO (home/office/gaming)Compare using chart →
ATX, socket AM4, chipset AMD B450, 4 x DDR4, DIMM, 3200 MHz, USB-C, HDMI, DisplayPort, M.2, > 4 SATA3, CrossFire, no backlight, suitable for mining
micro-ATX, socket LGA 1851, chipset Intel B860, 4 x DDR5, DIMM, 8666 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 2.5 Gbps, M.2 cooling
micro-ATX, socket AM4, chipset AMD B550, 4 x DDR4, DIMM, 4733 MHz, USB-C, HDMI, DisplayPort, M.2, > 4 SATA3, M.2 cooling, no backlight
micro-ATX, socket AM5, chipset AMD B850, 4 x DDR5, DIMM, 8000 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 2.5 Gbps, M.2 cooling, no backlight
ATX, socket AM5, chipset AMD B850, 4 x DDR5, DIMM, 8000 MHz, USB-C, HDMI, M.2, LAN 2.5 Gbps, M.2 cooling
micro-ATX, socket AM5, chipset AMD B850, 4 x DDR5, DIMM, 8000 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 2.5 Gbps, M.2 cooling
micro-ATX, socket AM5, chipset AMD B850, 4 x DDR5, DIMM, 8000 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 2.5 Gbps, Wi-Fi, M.2 cooling
ATX, socket AM4, chipset AMD B550, 4 x DDR4, DIMM, 4733 MHz, USB-C, HDMI, M.2, > 4 SATA3, CrossFire, M.2 cooling
ATX, socket AM5, chipset AMD B850, 4 x DDR5, DIMM, 8000 MHz, USB-C, HDMI, M.2, LAN 2.5 Gbps, Wi-Fi, M.2 cooling
ATX, socket LGA 1851, chipset Intel Z890, 4 x DDR5, DIMM, 8666 MHz, USB-C, USB4, HDMI, DisplayPort, Thunderbolt v4, M.2, LAN 2.5 Gbps, M.2 cooling, no backlight
ATX, socket AM5, chipset AMD B850, 4 x DDR5, DIMM, 8000 MHz, USB-C, HDMI, M.2, LAN 2.5 Gbps, M.2 cooling, no backlight
micro-ATX, socket AM5, chipset AMD B650, 4 x DDR5, DIMM, 7200 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 2.5 Gbps, CrossFire, M.2 cooling
ATX, socket AM5, chipset AMD B850, 4 x DDR5, DIMM, 8000 MHz, USB-C, HDMI, M.2, LAN 2.5 Gbps, Wi-Fi, M.2 cooling, no backlight
micro-ATX, socket AM4, chipset AMD A520, 4 x DDR4, DIMM, 4733 MHz, USB-C, HDMI, DisplayPort, M.2, M.2 cooling, no backlight
micro-ATX, socket AM5, chipset AMD A620, 4 x DDR5, DIMM, 7200 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 2.5 Gbps, M.2 cooling, no backlight
micro-ATX, socket AM5, chipset AMD B850, 4 x DDR5, DIMM, 8000 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 2.5 Gbps, Wi-Fi, M.2 cooling, no backlight
ATX, socket LGA 1851, chipset Intel B860, 4 x DDR5, DIMM, 8666 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 2.5 Gbps, M.2 cooling, no backlight
micro-ATX, socket AM5, chipset AMD A620, 4 x DDR5, DIMM, 8000 MHz, USB-C, HDMI, M.2, LAN 2.5 Gbps, M.2 cooling, no backlight
micro-ATX, socket LGA 1700, chipset Intel B760, 2 x DDR4, DIMM, 5333 MHz, USB-C, HDMI, DisplayPort, M.2, no backlight
ATX, socket LGA 1700, chipset Intel B760, 4 x DDR5, DIMM, 7200 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 2.5 Gbps, CrossFire, M.2 cooling
AccessoriesAll accessories for ASRock B850M Pro-A →
ASRock B850M Pro-A configurations
| Price for ASRock B850M Pro-A | ||||
|---|---|---|---|---|
 | ASRock B850M Pro-A WiFi | from £115.00 | 8 offers | |
 | ASRock B850M Pro-A | from £99.98 | 21 offer | |
We recommendCompare using chart →
micro-ATX, socket AM5, chipset AMD B850, 4 x DDR5, DIMM, 8000 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 2.5 Gbps, M.2 cooling
micro-ATX, socket AM5, chipset AMD B850, 4 x DDR5, DIMM, 8000 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 2.5 Gbps, Wi-Fi, M.2 cooling, no backlight
ATX, socket AM4, chipset AMD B550, 4 x DDR4, DIMM, 4733 MHz, USB-C, HDMI, M.2, no backlight
ATX, socket AM4, chipset AMD B550, 4 x DDR4, DIMM, 4600 MHz, USB-C, HDMI, DisplayPort, M.2, > 4 SATA3, LAN 2.5 Gbps, CrossFire, M.2 cooling
micro-ATX, socket AM4, chipset AMD A520, 4 x DDR4, DIMM, 4866 MHz, USB-C, HDMI, DisplayPort, M.2, Wi-Fi, M.2 cooling
micro-ATX, socket AM5, chipset AMD B650, 2 x DDR5, DIMM, 7200 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 2.5 Gbps, CrossFire, M.2 cooling, no backlight
micro-ATX, socket AM5, chipset AMD B650, 2 x DDR5, DIMM, 6400 MHz, USB-C, HDMI, M.2, LAN 2.5 Gbps, M.2 cooling, no backlight
micro-ATX, socket AM5, chipset AMD B850, 4 x DDR5, DIMM, 8200 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 5 Gbps, Wi-Fi, M.2 cooling, no backlight, White Edition
micro-ATX, socket LGA 1700, chipset Intel B760, 4 x DDR4, DIMM, 5333 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 2.5 Gbps, Wi-Fi, M.2 cooling, no backlight
micro-ATX, socket AM4, chipset AMD B550, 4 x DDR4, DIMM, 4866 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 2.5 Gbps, Wi-Fi, M.2 cooling
ATX, socket AM5, chipset AMD B650E, 4 x DDR5, DIMM, 8000 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 2.5 Gbps, Wi-Fi, M.2 cooling
micro-ATX, socket LGA 1700, chipset Intel B760, 4 x DDR4, DIMM, 5333 MHz, USB-C, HDMI, DisplayPort, M.2, LAN 2.5 Gbps, M.2 cooling, no backlight