Asrock B850M Pro-A WiFi AM5 micro ATX motherboard

£121.32 inc VAT

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About This Item

  • 3 M.2 slots for PCIe 4.0/5.0 and SATA III SSDs
  • AMD B850 chipset with Socket AM5 for Ryzen 7000/8000/9000 CPUs
  • 4 DIMM slots supporting up to 256 GB DDR5 memory
  • 2.5 Gb Ethernet and Wi-Fi 6E for high-speed connectivity
  • micro ATX form factor with 7.1 audio and 4 SATA III ports

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Description

ASRock B850M Pro-A WiFi | AMD B850 micro ATX Motherboard

The ASRock B850M Pro-A WiFi is a micro ATX motherboard built for AMD Ryzen 5000, 8000, and 9000 series processors on the Socket AM5 platform. With PCIe 5.0 support, Wi-Fi 6E, and robust VRM design, it delivers reliable performance for gaming, content creation, and everyday computing.

Quick Specs

Metric Spec
Form Factor micro ATX
Socket AM5
Memory Support DDR5, up to 256 GB
M.2 Slots 3 (one PCIe 5.0, two PCIe 4.0)
Wi-Fi Wi-Fi 6E + Bluetooth 5.2
LAN 2.5 Gb/s Ethernet

Built for Ryzen with PCIe 5.0 M.2

The B850M Pro-A WiFi supports the latest AMD Ryzen 7000, 8000, and 9000 series CPUs via Socket AM5. Its PCIe 5.0 M.2 slot offers up to 128 GB/s bandwidth, future-proofing your system for next-gen NVMe SSDs. Two additional M.2 slots provide flexible storage expansion with PCIe 4.0 speeds.

Optimized VRM for Stable Performance

Equipped with an 8+2+1 power phase design and Dr. MOS technology, this motherboard delivers smooth, efficient power to the CPU. The 6-layer PCB and Hi-Density Power Connectors improve signal integrity and reduce heat, ensuring stable operation during demanding tasks or overclocking.

Advanced Cooling and Quiet Operation

An aluminum heatsink design helps manage heat during heavy workloads. ASRock’s Fan-Tastic Tuning automatically detects fan types and allows precise control over speed curves. PWM/DC fan support ensures quieter performance while maintaining optimal cooling.

High-Speed Connectivity

With Wi-Fi 6E and Bluetooth 5.2, you get faster wireless speeds and lower latency. The 2.5 Gb/s LAN port offers up to 2.5× faster wired networking than standard Gigabit Ethernet. Multiple USB ports—including USB 3.2 Gen 2 Type-C—provide fast data transfer and device connectivity.

Customizable RGB Lighting

POLYCHROME RGB and SignalRGB support let you personalize your build with synchronized lighting effects across compatible devices. Onboard and addressable RGB headers make it easy to integrate LED strips, fans, and other accessories.

Box Contents

  • ASRock B850M Pro-A WiFi motherboard
  • SATA cables
  • Wi-Fi antennas
  • User manual and driver CD

Check before you buy

  • Confirm your CPU is compatible with Socket AM5 (Ryzen 5000/8000/9000 series).
  • Verify your case supports micro ATX motherboards (244 mm × 244 mm).
  • Ensure your PSU has the required 24-pin ATX and 8-pin EPS connectors.
  • Check that your DDR5 memory modules are on the QVL list for best stability.

Frequently Asked Questions

Q: Does this motherboard support DDR4 memory?

A: No, it only supports DDR5-SDRAM memory modules.

Q: Can I use this board with an older Ryzen CPU?

A: No, it requires an AM5-compatible Ryzen 7000, 8000, or 9000 series processor.

Q: How many M.2 SSDs can I install?

A: You can install up to three M.2 SSDs—one PCIe 5.0 and two PCIe 4.0.

Q: Is Wi-Fi 6E included?

A: Yes, it features Wi-Fi 6E (802.11ax) with dual antennas for extended coverage.

Q: Does it support RAID?

A: Yes, it supports RAID 0, 1, and 10 configurations.

The Consultant’s verdict & warranty

The ASRock B850M Pro-A WiFi is an excellent choice for users building a compact yet powerful AMD AM5 system. With PCIe 5.0 storage, robust VRM, and modern connectivity, it balances performance and value for gaming and productivity. Covered by the standard Manufacturer Warranty.

Specifications
Internal I/O
Number of M.2 (M) slots3
12V power connectorYes
Supported storage drive interfacesPCI Express 4.0, PCI Express 5.0, SATA III
USB 2.0 connectors2
USB 3.2 Gen 1 (3.1 Gen 1) connectors3
TPM connectorYes
Number of SATA III connectors4
Number of chassis fan connectors3
Front panel audio connectorYes
EPS power connector (8-pin)Yes
CPU fan connectorYes
ATX Power connector (24-pin)Yes
RGB LED pin headerYes
Number of CPU fan connectors2
Number of EPS power connectors (8-pin)1
Number of RGB LED pin headers1
Technical details
Motherboard chipset familyAMD
Motherboard chipsetAMD B850
Supported processor socketsSocket AM5
Parallel processing technology supportNot supported
HDMI version2.1
Motherboard form factormicro ATX
Component forPC
Audio
Audio output channels7.1 channels
Performance
Supported storage drive typesHDD & SSD
Windows operating systems supportedWindows 10 x64, Windows 11 x64
Motherboard chipset familyAMD
Motherboard chipsetAMD B850
RAID levels0, 1, 10
Supported processor socketsSocket AM5
CertificationFCC, CE, ErP/EuP
Audio output channels7.1 channels
Motherboard form factormicro ATX
Component forPC
Processor
Processor manufacturerAMD
Compatible processor seriesAMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
Supported processor socketsSocket AM5
Processor socketSocket AM5
Memory
Number of memory slots4
Memory slots typeDIMM
Supported memory typesDDR5-SDRAM
Memory channelsDual-channel
Maximum internal memory256 GB
Unbuffered memoryYes
ECC сompatibilityECC & Non-ECC
Storage controllers
Supported storage drive typesHDD & SSD
Supported storage drive interfacesPCI Express 4.0, PCI Express 5.0, SATA III
RAID levels0, 1, 10
Number of storage drives supported7
RAID supportYes
Graphics
Parallel processing technology supportNot supported
Maximum resolution3840 x 2160 pixels
HDCPYes
Rear panel I/O ports
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity2
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity1
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity1
DisplayPort version1.4
USB connector typeUSB Type-A, USB Type-C
USB 2.0 ports quantity4
WiFi-AP antenna jack2
Microphone inYes
Headphone outputs3
HDMI version2.1
HDMI ports quantity1
Ethernet LAN (RJ-45) ports1
DisplayPorts quantity1
Line-inYes
Network
Ethernet LANYes
Wi-FiYes
Wi-Fi standards802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6 (802.11ax), Wi-Fi 6E (802.11ax)
LAN controllerDragon RTL8125BG
Ethernet interface type2.5 Gigabit Ethernet
BluetoothYes
Bluetooth version5.2
Top Wi-Fi standardWi-Fi 6E (802.11ax)
Features
Windows operating systems supportedWindows 10 x64, Windows 11 x64
Motherboard chipset familyAMD
Motherboard chipsetAMD B850
Supported processor socketsSocket AM5
CertificationFCC, CE, ErP/EuP
Audio output channels7.1 channels
Motherboard form factormicro ATX
Component forPC
Audio chipRealtek ALC897
Product colourBlack
Expansion slots
Number of M.2 (M) slots3
PCI Express x16 (Gen 5.x) slots1
PCI Express x4 (Gen 4.x) slots1
1st M.2 largest key size2280
1st M.2 highest PCI Express generation5.0
2nd M.2 largest key size2280
2nd M.2 highest PCI Express generation4.0
3rd M.2 largest key size2280
3rd M.2 highest PCI Express generation4.0
BIOS
BIOS typeUEFI AMI
BIOS memory size256 Mbit
Video
Maximum resolution3840 x 2160 pixels
HDCPYes
Certificates
CertificationFCC, CE, ErP/EuP
Software
Windows operating systems supportedWindows 10 x64, Windows 11 x64
Weight & dimensions
Width244 mm
Depth244 mm
Packaging content
Cables includedSATA
Antenna includedYes

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