The MSI B550M-A Pro Motherboard 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, features up to 2 x DDR4 memory slots, PCIe 4.0 and 3.0 compatible expansion slots, 1 x M.2 slot, 4 x SATA ports (6Gb/s), 6 x rear USB ports, 6 x front panel USB header ports, Realtek RTL8111H Gigabit LAN, 7.1-Channel High Definition Audio with Realtek ALC892/ALC897 Codec and an m-ATX form factor.
Warning: This product contains a button battery
- If swallowed, a lithium battery can cause severe or fatal injuries with 2 hours.
- Keep batteries out of reach of children.
- If you think batteries may have been swallowed or placed inside any of the body, seek immediate medical attention.
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Features
B550M-A Pro
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 optimised 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 4600(OC) MHz
- Lightning Fast Experience: PCIe 4.0, Lightning Gen4 x4 M.2
- Core Boost: With premium layout and digital power design to support more cores and provide better performance
- DDR4 Boost: Advanced technology to deliver pure data signals for the best performance and stability
- 2oz Thickened Copper PCB: An enhanced PCB design improves heat dissipation and performance reliability
- Audio Boost: Reward your ears with studio grade sound quality
- Dragon Center: A brand new software which integrates all MSI exclusive tools with user friendly user interface.
Business Elegance
4K Support
Onboard HDMI™ supports up to 4K UHD resolution.
Audio Boost
Reward your ears with studio grade sound quality for the most immersive gaming experience.
2oz Thickened Copper PCB
An enhanced PCB design improves heat dissipation and performance reliability.
Core Boost
With premium layout and digital power design to support more cores and provide better performance.
DDR4 Boost
The fully isolated DDR circuit to deliver pure data signals for the best performance and stability.
Lightning Gen 4 Solution
The latest Gen4 PCI-E and M.2 solution with up to 64GB/s bandwidth for maximum transfer speed.
User Friendly Design
MSI motherboards feature tonnes 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.
Cooling
Fully Fan Control
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.
AutoDetect DC or PWM Mode with Hysteresis
MSI fan headers automatically detect fans running in DC or PWM mode for optimal tuning of fan speeds and silence. Hysteresis also makes your fans spin up fluently to make sure your system stays silent, no matter what.
Design
EZ Debug LED
Ran into trouble? Onboard LEDs for key components will indicate the source of the problem so you know exactly where to look to get it up and running again.
Compatibility
- Ryzen™ 3000 & 4000 G-Series Processors Support
- Extreme Stability & Compatibility Testing for Memory
- Windows 10 Certified
Reliable Components
Steel Armour
Fortify Your System with PCI-e Steel Armour
MSI PCI Express Steel Armour 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 Armour shields the point of contact from electromagnetic interference.
Double ESD Protection
Ultimate Motherboard Protection
Double ESD protection doubles up the grounding layer around the mounting holes, preventing static discharge surges from damaging the motherboard.
- MSI - Double ESD Protection - Best
- Brand A - Single ESD Protection - Average
- Brand G - Semi ESD Protection - Poor
Connectivity
The most important thing of DIY is expandability. MSI PRO series motherboards feature plenty possibility for prosumers’ need. Stable LAN, faster storage and USB transfer speed and other expandable connectors are ready to enlarge your flexibility.
Storage
Fast and Future-Ready Storage
MSI PRO series motherboards support all the latest storage standards, which allows users to connect any ultra-fast storage device. Higher efficiency makes your work easier.
Lightning Gen 4 M.2
Utilising 3rd Gen Ryzen processors, MSI B550 motherboards feature latest Lightning Gen 4 M.2 which is the fastest onboard storage solution on the market with up to 64 Gb/s transfer speed.
USB 3.2 Gen 1
Transfer lots of data, music and movies over USB easier. USB 3.2 ports are ready in both front and rear IO, provides wide variety of options to connect your USB 3.2 devices.
Experience More
MSI PRO series motherboards are designed to satisfy any professional workflow. Elevate your listening pleasure and enjoy extreme sound quality. Moreover, with years of experience in creating performance enhancing tools that are easy to use, only the highest quality applications are at your disposal. The extensive features let you fine-tune your system to deliver reliable maximum performance.
Performance
2oz Thickened Copper
PCB with 2oz Thickened Copper
An enhanced PCB design with 2oz thickened copper increases conductivity, improving heat dissipation and performance reliability especially during overclocking.
Lightning Gen 4 PCI-E
MSI lightning Gen 4 PCI-E is the latest and the fastest PCI-E data transfer solution with 64GB/s of transfer bandwidth that has doubled compared to its previous generation. PCIe 4.0 maintains both backward and forward compatibility with older and newer specifications. Optimised by steel armour design and server grade PCB, you can enjoy next-gen devices without any compromise.
Core Boost
Core Boost technology combines MSI's premium layout and optimised power design which allows for faster and undistorted current delivery to the CPU at pin-point precision. Not only supporting multi-core CPU, also creating the perfect conditions for your CPU overclocking.
Audio
Isolated Audio Signal
Isolated Audio Design
Like a dedicated sound card, audio components and circuits have been laid on a reserved motherboard section and electrically isolated.
Separated Audio Layers for Clean Left & Right Channels
Using separated layers in the PCB ensures equally pristine sound quality for both left and right audio channels.
BIOS & Software
MSI Center
MSI brand new MSI Center unifies a suite of MSI software utilities into a single centralised application. Take control of advanced motherboards features and unleash endless possibilities.
True Colour
Optimised monitor’s brightness and colour in several modes for different situation, you can also customise by yourself.
Live Update
Never miss out on important updates. MSI Live Update automatically downloads and installs the latest drivers, BIOS and software so you can focus on your work.
User Scenario
One click for setting your computer, even customise own profile as your preference.
Hardware Monitor
Get immediate access to your critical hardware information in real-time.
Profile Setting
Select motherboard settings in the Profile Setting menu, where options to boost DRAM performance and optimise system cooling are presented in an intuitive interface.
Total Fan Control
Assume complete control of your fans with Total Fan Control. Set up to four CPU temperature targets and the motherboard will adjust fan speeds automatically.
Mystic Light
Create your own colourful masterpiece with ease. Splash any colour you want with just a few clicks!
Product Registration
Register your MSI product to enjoy a host of benefits!
Resizable Bar (Re-Size Bar)
Resizable BAR (Re-Size BAR) is an advanced PCI Express feature that enables the CPU to access the entire GPU frame buffer at once and improve performance.
*Function may differ due to version change. Please update the latest VBIOS/BIOS/Driver through MSI official website or consult service center.
