Dark mode
United Kingdom
Catalog   /   Computing   /   Components   /   Motherboards   /   MSI

MSI B550-A PRO

Photos - Motherboard MSI B550-A PRO
Videos 15Photos 6
MSI B550-A PRO
Towards:gaming
Form Factor:ATX
Socket:AMD AM4
Chipset:AMD B550
BIOS:Ami
RAM slots:DDR4 4 sl
RAM form factor:DIMM
RAM clock:4400 MHz
Sound (channels):7.1
Connectors:HDMI, M.2
Additional connectors:DisplayPort
Power connector:24 pin
Processor power:8 pin

Well-balanced 2020 ATX multi-purpose motherboard with AMD AM4 socket and mid-range B550 chipset. Designed to complete gaming systems, high-performance universal home PCs and entry-level workstations. Thanks to the reinforced PCI-E slot connector, it can work with massive and large-sized top-end discrete gaming video cards. It is positioned as a product of the middle price category.

Guaranteed compatible with AMD Ryzen 3000 (Matisse/Matisse Refresh, 7nm) and Ryzen 4000G (Renoir, 7nm) APUs. Unlike the previous generation models based on the B450 chipset), MSI B550-A PRO motherboard fully supports the high-speed PCI-E Gen 4.0 system interface, which allows you to 100% increase the speed of loading textures into progressive models of discrete graphics cards and speed up the exchange data with fast NVMe SSDs. With four DDR4 DIMM slots, you can install an impressive maximum total amount of RAM (up to 128 GB), which is more than enough for gaming, streaming and solving any household/professional tasks. It is also worth noting the presence of a high-speed network GbE LAN adapter Realtek 8111H and two digital video outputs (HDMI, DisplayPort).

All specifications
Specifications B550-A PRO
Main
Featuresgaming for overclocking
SocketAMD AM4
Form factorATX
VRM heatsink
Size (HxW)305x244 mm
Chipset
ChipsetAMD B550
BIOSAmi
UEFI BIOS
RAM
DDR44 slot(s)
Memory moduleDIMM
Operation mode2 channel
Max. clock frequency4400 MHz
Max. memory128 GB
XMP
Drive interface
SATA 3 (6Gbps)6
M.2 connector2
M.21xSATA/PCI-E 4x, 1xPCI-E 4x
M.2 SSD cooling
Integrated RAID controller / RAID 0, RAID 1 and RAID 10 /
Expansion slots
1x PCI-E slots2
PCI-E 16x slots2
PCI Modes16x/4x
PCI Express4.0
CrossFire (AMD)
Steel PCI-E connectors / PCI-E 4.0 /
Internal connections
TPM connector
USB 2.02
USB 3.2 gen11
USB C 3.2 gen11
RGB LED strip3 / 2x3-pin RAINBOW LED, 1x4-pin RGB LED /
Video outputs
HDMI output
DisplayPort
Integrated audio
AudiochipRealtek ALC892
Sound (channels)7.1
Network interfaces
LAN (RJ-45)1 Gbps
LAN ports1
LAN controllerRealtek 8111H
External connections
USB 2.04
USB 3.2 gen12
USB 3.2 gen21
USB C 3.2 gen21
PS/21
BIOS FlashBack
Power connectors
Main power socket24 pin
CPU power8 pin
Fan power connectors8
CPU Fan 4-pin1
CPU/Water Pump Fan 4-pin1
Chassis/Water Pump Fan 4-pin6
Official Websitemsi.com
Added to E-Catalogmay 2020
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 MSI 2025 - new arrivals, bestsellers, and the most relevant models MSI.
How to choose a motherboard?Motherboard is the main part of any computer. Here's how to choose the right one for work, play and entertainment

Buy MSI B550-A PRO

All prices 12 →
When you make a purchase through links on our site, we may receive a affiliate commission.

MSI B550-A PRO ProSeries Motherboard AMD AM4 DDR4 PCIe 40 SATA 6Gb/s M2 USB 32 Gen 2 HDMI/DP ATX

Audio Boost rewards your ears with studio-quality audio for immersive gaming experiences.Premium Thermal Solution: 7W/mk heat... moresink thermal pad and 57g thick copper PCB.BIOS button allows users to flash BIOS even without CPU or memory.Powerful Design: Core Boost, Digital PWM IC, 56.7g thickened copper PCB, Creator Genie, DDR4 Boost Supports DDR4 memory, up to 4400 MHz (OC) Quick 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 with extra thermal pad and 7W/mK buffer, and M.2 Shield Frozr are designed for high performance system and non-stop work Powerful Design: Core Boost, Digital PWM IC, 56.7g PCB, Creator Genie, DDR4 Boost
Amazon.co.uk
Delivery: to United Kingdom
Report
£118.90

MSI B550-A PRO motherboard AMD B550 Socket AM4 ATX

Internal I/ONumber of M.2 (M) slots212V power connectorYesSupported storage drive interfacesSATA IIIUSB 2.0 connectors2USB 3.... more2 Gen 1 (3.1 Gen 1) connectors1TPM connectorYesNumber of SATA III connectors6Number of chassis fan connectors6Front panel audio connectorYesCPU fan connectorYesChassis intrusion connectorYesATX Power connector (24-pin)YesRGB LED pin headerYesTechnical detailsMotherboard chipset familyAMDMotherboard chipsetAMD B550Parallel processing technology support2-Way CrossFireXOn-boa
itsupplies.uk
Delivery: to United Kingdom
Report
£96.03

MSI AMD B550-A PRO AM4 DDR4 ATX Motherboard

MSI AMD B550-A PRO AM4 DDR4 ATX Motherboard B550-A PRO Supports AMD Ryzen 5000 & 3000 Series desktop processors (not co... morempatible 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. M.2 SHIELD FROZR Worlds fastest SSDs can start to lower performance when getting hot. Part of the motherboards heatsink design, M.2 SHIELD FROZR is the next generation M.2 thermal solution to avoid this by offering the best thermal protection to make sure that SSD maintains maximum performance. PCB WITH 2OZ THICKENED COPPER An enhanced PCB design with 2oz thickened copper increases conductivity, improving heat dissipation and performance reliability especially during overclocking. Note: The content above is generic for the series. For Correct info about this particular model, please refer to Specifications section.
Box.co.uk
Delivery: to United Kingdom
Report
£106.99

MSI B550-A PRO motherboard AMD B550 Socket AM4 ATX

PRO series helps users work smarter by delivering an efficient and productive experience. Featuring stable functionality and... morehigh-quality assembly PRO series motherboards provide not only optimized professional workflows but also less troubleshooting and longevity. USER FRIENDLY DESIGN MSI motherboards feature tons of convenient and smart design for DIY users countless system tuning and troubleshooting tools are at your disposal to push your system to new heights and satisfy even the most demanding tweaker. Makes it so easy to install your own motherboard without any issue. THERMAL SOLUTION FOR MORE CORES AND HIGHER PERFORMANCE With more cores processors thermal and power design is more important to make sure the temperature keeps lower. MSI extended PWM heatsink with 7W/mK thermal pad ensures even high-end processors to run in full speed with MSI motherboards. M.2 SHIELD FROZR Worlds fastest SSDs can start to lower performance when getting hot. Part of the motherboards heatsink design M.2 SHIELD FROZR is the next generation M.2 thermal solution to avoid this by offering the best thermal protection to make sure that SSD maintains maximum performance. FULLY CONTROLLABLE IN BIOS AND SOFTWARE MSI motherboards let you manage speeds and temperatures for all your system and CPU fans. Total Fan Control allows you check your primary system characteristics in a simplified graphical interface. You can also set up to 4 temperature targets for CPU and motherboard which will adjust the fan speeds automatically. OPTIMIZED FOR WATER COOLING Designed to support the most popular All-In-One & customized water cooling solutions on the market. A dedicated water pump PIN header supports up to 3 amp giving you full control of the water pump speed. A clearly marked keep-out-zone allows for easy and safe installation and a perfect fit. EASY BIOS RECOVERY WITH FLASH BIOS BUTTON Run into trouble when updating your BIOS? Simply flash the old BIOS version back and continue working within minutes with Flash BIOS Button. Flash BIOS Button even works without a CPU memory or graphics card installed! EZ DEBUG LED Run into trouble? Onboard LEDs for key components will indicate the source of the problem so you know exactly where to look to get up and running again. XL CLIP The enlarged PCI-E clip helps you swap or remove your devices easier. Keep the PCI-E slot stronger and safer. EASY TO ARRANGE YOUR CABLES Not clever at cable arrangement? MSI Atypical PCB design not only the identity of stylish but also makes SATA and USB cable routing easier. Arranges cable neatly even you are not familiar with system build. FORTIFY YOUR SYSTEM WITH PCI-E STEEL ARMOR MSI PCI Express Steel Armor slots are secured to the motherboard with extra solder points and support the weight of heavy graphics cards. When every advantage in games counts Steel Armor shields the point of contact from electromagnetic interference. ULTIMATE MOTHERBOARD PROTECTION Double
Quzo.co.uk
Delivery: to United Kingdom
Report
£109.21

MSI PRO B550-A AMD AM4 Motherboard

This MSI motherboard lets you build a powerful PC based on a 3th gen AMD processor and DDR4 RAM. Fancy a gaming rig or a cont... moreent creator's workstation? Using the PCIe 4.0 expansion slot you can hook up most recent graphics cards for a truly high-end setup. Best thing about a PC is upgradeability. That's why this motherboard is seriously tough - the MSI Steel Armor reinforcement means you're up for many years of heavy use. Good to know - With the M.2 Thermal Frozr Guards it's ready to keep cool even a high-performance setup - EZ Debug LED helps you troubleshoot any issue quickly - Gigabit Ethernet port is great for lightning fast wired internet connection - With the Mystic Light app on your phone you can control any RGB strips or components added to your setup
Currys.co.uk
Delivery: to United Kingdom
Report
£99.99
7 more offer(s)
Video reviews
Filters
Models
MSI (features) 
HEDT (High-End DeskTop)