MSI B550-A PRO, AMD B550, AM4, ATX, 4 DDR4, HDMI, DP, GB LAN, 2x M.2

MSI B550-A PRO, AMD B550, AM4, ATX, 4 DDR4, HDMI, DP, GB LAN, 2x M.2

£104.99

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The lowest price ( 11 December 2025 ): £104.99 SKU: B550-A PRO Category: Brand:

Description

PRO series helps users work smarter by delivering an efficient and productive experience.

Featuring stable functionality and high-quality assembly, PRO series motherboards provide not only optimized professional workflows but also less troubleshooting and longevity.
 

  • Supports AMD Ryzen™ 5000 & 3000 Series desktop processors (not compatible with AMD Ryzen™ 5 3400G & Ryzen™ 3 3200G) and AMD Ryzen™ 4000 G-Series desktop processors
  • Supports DDR4 Memory, up to 4400(OC) MHz
  • Lightning Fast Experience: PCIe 4.0, Lightning Gen4 x4 M.2 with M.2 Shield Frozr, AMD Turbo USB 3.2 Gen 2
  • Premium Thermal Solution: Extended Heatsink Design with additional choke thermal pad and 7W/mK pad, and M.2 Shield Frozr are built for high performance system and non-stop works
  • Powerful Design: Core Boost, Digital PWM IC, 2oz Thickened Copper PCB, Creator Genie, DDR4 Boost
  • Audio Boost: Reward your ears with studio grade sound quality
  • Multi-GPU: With Steel armor PCI-E slots. Supports 2-Way AMD Crossfire™
  • Dragon Center: A brand new software which integrates all MSI exclusive tools with user friendly user interface.  

PCI-E Steel Armor
Protecting VGA cards against bending and EMI.

Mystic Light Extension

Control additional RGB strips or other RGB components added your system with Mystic Light APP and mobile device.

M.2 Shield FROZR

Strengthened built-in M.2 thermal solution. Keeps M.2 SSDs safe while preventing throttling, making them run faster.

Lightning Gen4 Solution

The latest Gen4 PCI-E and M.2 solution with up to 64GB/s bandwidth for maximum transfer speed.

Core Boost

With premium layout and fully digital power design to support more cores and provide better performance.

EZ Debug LED

Easiest way to troubleshoot.

Audio Boost

Reward your ears with studio grade sound quality for the most immersive audio experience.

DDR4 Boost

Advanced technology to deliver pure data signals for the best gaming performance and stability.

2oz Thickened Copper PCB

An enhanced PCB design improves heat dissipation and performance reliability.
 

 

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Additional information

Product Type

Motherboard
Brand

MSI
Model

B550-A PRO
Chipset

AMD B550
Socket

AM4
Form Factor

ATX
Memory Type

DDR4
Memory Slots

4
Max Memory Speed

4400 MHz (OC)
Pcie Version

4.0
M2 Slots

2
Video Outputs

HDMI, DisplayPort
Ethernet

Gigabit LAN
Usb Version

3.2 Gen 2
Multi Gpu Support

2-Way AMD Crossfire
Audio Enhancement

Audio Boost
Rgb Lighting

Mystic Light
Supported Processors

AMD Ryzen 5000 Series, AMD Ryzen 3000 Series, AMD Ryzen 4000 G-Series
Excluded Processors

AMD Ryzen 5 3400G, AMD Ryzen 3 3200G
Special Features

Core Boost, DDR4 Boost, M.2 Shield Frozr, EZ Debug LED, PCI-E Steel Armor, Dragon Center

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