Asrock · MPN: 90-MXBQN0-A0UAYZ
£145.99
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Key specs

  • Maximum resolution3840 x 2160 pixels
  • 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)
All specifications

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Price drop alert

Asrock B850 Pro-A WiFi AMD B850 Socket AM5 ATX
Now £145.99

We'll email you if the price of this item drops in the next 90 days.

Overview

  • Supports AMD Socket AM5 Ryzen™ 9000, 8000 and 7000 Series Processors
  • 14+2+1 Phase Power Design, 80A Dr.MOS for VCore+SOC+MISC
  • 4 x DDR5 DIMMs
  • Supports Dual Channel, up to 8000+ (OC)
  • 1 PCIe 5.0 x16, 1 PCIe 4.0 x16
  • Graphics Output Options: 1 HDMI, 1 USB Type-C (DP-alt)
  • Realtek ALC897 7.1 CH HD Audio Codec
  • 1 Blazing M.2 (PCIe Gen5x4), 2 Hyper M.2 (PCIe Gen4x4), 1 Ultra M.2 (PCIe Gen3x4), 4 SATA3
  • 1 USB 3.2 Gen2x2 Type-C (Front), 1 USB 3.2 Gen2 Type-C (Rear), 1 USB 3.2 Gen1 Type-C (Rear), 6 USB 3.2 Gen1 (4 Rear, 2 Front), 9 USB 2.0 (6 Rear, 3 Front)
  • Realtek 2.5G LAN

Optimized for stability, durability, and efficiency. It combines reliable performance, user-friendly features and streamlined style for daily computing tasks.

Performance
Optimized VRM Design
VRM Design
14+2+1 Power Phase Design

Featuring sturdy components and completely smooth power delivery to the CPU. Plus, it offers unmatched overclocking capabilities and enhanced performance with the lowest temperature for advanced gamers as well.

Dr. MOS
Dr.MOS is the integrated power stage solution which is optimized for synchronous buck-set down voltage applications! Compared to traditional discrete MOSFETs, it intelligently delivers higher current for each phase, thus providing improved thermal result and superior performance.

Hi-Density Power Connector
CPU overclocking requires higher current. ASRock Hi-Density Power Connectors are designed to withstand higher currents compared to traditional CPU and ATX power connectors, providing a more stable system and reducing the risk of fire during heavy overclocking.

8 Layer PCB
The 8 Layer PCB provides stable signal traces and power shapes delivering lower temperature and higher energy efficiency for memory overclocking! Thus, it's able to support the latest memory modules with most extreme memory performance!

DDR5 XMP & EXPO Support
Derived from the “built for stable and reliable” designing concept, ASRock does not compromise on any details. This motherboard is built with high quality materials, enthusiasts are able to enjoy the boost of DDR5 memory overclocking performance by enabling the pre-tested profiles. Make sure the memory modules are Intel® XMP/AMD EXPO™ capable and overclocking can be made so affordable, satisfying and absolutely no sweat at all.

High Speed M.2 Solution
PCIe Gen5 Blazing M.2

The Blazing M.2 accommodates the latest PCI Express 5.0 standard to perform twice the bandwidth compared to previous generation, with a breathtaking 128Gb/s transfer speed, it is ready to unleash the full potential of future ultrafast SSDs.

Hyper M.2 Gen4 x4
Supports PCI Express 4.0 M.2 SSDs, it is capable of perform twice the speed compared to previous 3rd generation, giving a lightning fast data transferring experience.

Cooling
Intelligent Cooling Design
Aluminum Heatsink

The first thing that catches the eye is the optimized Aluminum Heatsink Design. Heatsinks are crucial for efficient heat dissipation, especially during heavy workloads like gaming or productivity tasks. Motherboard that built with heatsinks can effectively manage thermal performance, hence ensure system stability and durability effortlessly.

PWM/DC Fan Support
ASRock fan headers automatically detect whether fans are running in DC or PWM mode, allowing users to fine-tune the fan curve and achieve quieter operation.

Fan-Tastic Tuning
ASRock A-Tuning Fan-Tastic Tuning function enables users to auto-detect the minimum duty of each fan with a single click. Users can also easily adjust the fan curve via the visualized UI interface, meeting their system's cooling performance and noise reduction requirements.

Connectivity
Wi-Fi 6E 802.11axe

WiFi 6E technology has extended to the whole new 6GHz spectrum band, providing more WiFi capability and giving an even better and faster internet traffic. In addition to deliver higher speeds, the WiFi 6E also enhances the lower latency and supports service levels that are equivalent to 5G networks.

Dragon 2.5 Gb/s LAN
The intelligent 2.5Gb/s LAN platform is built for maximum networking performance for the demanding requirements of home networking, content creators, online gamers and high-quality streaming media. Boost networking performance up to 2.5X the bandwidth compared to the standard gigabit Ethernet, you’ll enjoy the faster and uncompromised connectivity experience for gaming, file transfers and backups.

Abundant USB
Front Panel USB 3.2 Gen2x2 Type-C Header

The latest USB 3.2 Gen2x2 Type-C delivers up to 20 Gbps data transfer rate which is 2x as fast as previous generation, providing a blazing fast data transfer interface with reversible USB Type-C design that fits the connector either way.

USB Type-C (DP-alt Mode)
USB Alternate Mode allows USB Type-C ports to enable both data transfer and display output to DisplayPort monitors through a single cable.

Stylish Design
POLYCHROME RGB

This motherboard features onboard RGB headers and addressable RGB headers that allow motherboard to be connected to compatible LED devices such as strip, CPU fans, coolers, chassis and so on. Users may also synchronize RGB LED devices across the Polychrome RGB Sync-certified accessories to create their own unique lighting effects.

SignalRGB
SignalRGB unifies your RGB devices, offering seamless customization, game-reactive effects, macro automation, and system monitoring. The official partnership empowers ASRock motherboards with advanced lighting control, enhances compatibility with a diverse range of RGB devices, and provides greater customization flexibility.

DIY Friendly
Reinforced Steel Slot [PCIe 5.0 Version]

The reinforced steel slot is capable of supporting PCI Express 5.0 standard. The various benefits include:
- Extra anchor points
- Stronger latch
- Ensure signal stability
- Make sure heavy graphics cards to be well-installed.

EZ Setting
Auto Driver Installer

No need to worry about lack of disk drive! Asrock preinstall LAN driver to ensure that you are able to install all drivers needed in an easier way than using SCD.

BIOS Flashback
Get the most convenient BIOS flashing with just a simple click. Users can easily achieve the latest BIOS support with a USB and a power supply. No CPU, RAM or other components are required.

Specifications

Processor

Supported processor socketsSocket AM5
Compatible processor seriesAMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
Processor socketSocket AM5
Processor manufacturerAMD

Memory

Unbuffered memoryYes
Maximum internal memory256 GB
ECC сompatibilityECC & Non-ECC
Memory channelsDual-channel
Memory slots typeDIMM
Number of memory slots4
Supported memory typesDDR5-SDRAM
Show all 81 specificationsShow fewer specifications

Storage controllers

RAID levels0, 1, 10
RAID supportYes
Number of storage drives supported8
Supported storage drive interfacesPCI Express 4.0, PCI Express 5.0, SATA III
Supported storage drive typesHDD & SSD

Graphics

HDCPYes
Maximum resolution3840 x 2160 pixels
Parallel processing technology supportNot supported

Internal I/O

Number of RGB LED pin headers1
RGB LED pin headerYes
Number of water pump connectors1
TPM connectorYes
12V power connectorYes
Number of EPS power connectors (8-pin)2
EPS power connector (8-pin)Yes
Number of chassis fan connectors4
Number of CPU fan connectors2
CPU fan connectorYes
ATX Power connector (24-pin)Yes
Front panel audio connectorYes
Number of SATA III connectors4
USB 3.2 Gen 2x2 connectors1
USB 3.2 Gen 1 (3.1 Gen 1) connectors1
USB 2.0 connectors2

Rear panel I/O ports

USB connector typeUSB Type-A, USB Type-C
WiFi-AP antenna jack2
Microphone inYes
Headphone outputs3
Line-inYes
HDMI version2.1
HDMI ports quantity1
Ethernet LAN (RJ-45) ports1
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity1
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity1
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity4
USB 2.0 ports quantity6

Network

Bluetooth version5.2
BluetoothYes
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)
Top Wi-Fi standardWi-Fi 6E (802.11ax)
Wi-FiYes
LAN controllerDragon RTL8125BG
Ethernet interface type2.5 Gigabit Ethernet
Ethernet LANYes

Features

CertificationFCC, CE, ErP/EuP
Windows operating systems supportedWindows 10 x64, Windows 11 x64
Product colourBlack
Audio output channels7.1 channels
Audio chipRealtek ALC897
Motherboard chipsetAMD B850
Motherboard chipset familyAMD
Motherboard form factorATX
Component forPC

Expansion slots

4th M.2 highest PCI Express generation4.0
4th M.2 largest key size2280
3rd M.2 highest PCI Express generation4.0
3rd M.2 largest key size2280
2nd M.2 highest PCI Express generation4.0
2nd M.2 largest key size2280
1st M.2 highest PCI Express generation5.0
1st M.2 largest key size2280
Number of M.2 (M) slots4
PCI Express x16 (Gen 5.x) slots1
PCI Express x16 (Gen 4.x) slots1

BIOS

BIOS memory size256 Mbit
BIOS typeUEFI AMI

Weight & dimensions

Depth244 mm
Width305 mm

Packaging content

Antenna includedYes
Cables includedSATA

Manuals & downloads

Delivery & returns

Delivery

  • FREE standard delivery on orders over £50, otherwise £4.95 (3–5 working days).
  • Express delivery £9.99 (1–3 working days) on selected products, UK mainland.
  • PlayStation and Arozzi products use a 5–7 working-day service.
  • Orders are processed within 24 hours, Monday to Friday excluding bank holidays. All deliveries must be signed for.

Returns

  • Changed your mind? Tell us within 14 days of receiving your item, then return it within a further 14 days, unused and in its original packaging. A minimum £9.99 collection fee applies.
  • Faulty or damaged on arrival? Contact us within 48 hours of delivery.
  • Custom-built PCs can only be returned if faulty. Opened headphones, earphones and AirPods can't be returned for hygiene reasons.

Full delivery information · Full returns policy