Asrock B850 Pro-A AMD B850 Socket AM5 ATX

SKU: 90-MXBQM-A0UAYZ
Regular price £169.42 inc. VAT
  • 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, 1 M.2 Key E for WiFi
  • 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
  • Supports BIOS Flashback

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.

Power Connector
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
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.

Processor
Supported processor sockets Socket AM5
Compatible processor series AMD Ryzen 7000 Series, AMD Ryzen 8000 Series, AMD Ryzen 9000 Series
Processor socket Socket AM5
Processor manufacturer AMD
Memory
Unbuffered memory Yes
Maximum internal memory 256 GB
ECC сompatibility ECC & Non-ECC
Memory channels Dual-channel
Memory slots type DIMM
Number of memory slots 4
Supported memory types DDR5-SDRAM
Storage controllers
RAID levels 0, 1, 10
RAID support Yes
Number of storage drives supported 8
Supported storage drive interfaces PCI Express 3.0, PCI Express 4.0, PCI Express 5.0, SATA III
Supported storage drive types HDD & SSD
Graphics
HDCP Yes
Maximum resolution 3840 x 2160 pixels
Parallel processing technology support Not supported
Internal I/O
Number of RGB LED pin headers 4
RGB LED pin header Yes
Number of water pump connectors 1
TPM connector Yes
12V power connector Yes
Number of EPS power connectors (8-pin) 2
EPS power connector (8-pin) Yes
Number of chassis fan connectors 4
Number of CPU fan connectors 2
CPU fan connector Yes
ATX Power connector (24-pin) Yes
Front panel audio connector Yes
Number of SATA III connectors 4
USB 3.2 Gen 2x2 connectors 1
USB 3.2 Gen 1 (3.1 Gen 1) connectors 1
USB 2.0 connectors 2
Rear panel I/O ports
USB connector type USB Type-A, USB Type-C
Microphone in Yes
Line-in Yes
Headphone outputs 3
HDMI version 2.1
HDMI ports quantity 1
Ethernet LAN (RJ-45) ports 1
USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity 1
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity 1
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity 4
USB 2.0 ports quantity 6
Network
Wi-Fi No
LAN controller Dragon RTL8125BG
Ethernet interface type 2.5 Gigabit Ethernet
Ethernet LAN Yes
Features
Certification FCC, CE, ErP/EuP
Windows operating systems supported Windows 10 x64, Windows 11 x64
Product colour Black
Audio output channels 7.1 channels
Audio chip Realtek ALC897
Motherboard chipset AMD B850
Motherboard chipset family AMD
Motherboard form factor ATX
Component for PC
Expansion slots
4th M.2 highest PCI Express generation 3.0
4th M.2 largest key size 2280
3rd M.2 highest PCI Express generation 4.0
3rd M.2 largest key size 2280
2nd M.2 highest PCI Express generation 4.0
2nd M.2 largest key size 2280
1st M.2 highest PCI Express generation 5.0
1st M.2 largest key size 2280
Number of M.2 (M) slots 4
PCI Express x16 (Gen 5.x) slots 1
PCI Express x16 (Gen 4.x) slots 1
BIOS
BIOS memory size 256 Mbit
BIOS type UEFI AMI
Weight & dimensions
Depth 244 mm
Width 305 mm
Packaging content
Screws included Yes
Cables included SATA