MSI B550-A Pro Motherboard

The MSI B550-A Pro motherboard supports 3rd gen AMD AM4 processors, features up to 4 x DDR4 memory slots, PCI-E 4.0, PCI-E 3.0, 2 x M.2 slots, 6 x SATA 6GB/s ports, 8 x USB 2.0 (4 front, 4 rear), 2 x USB 3.2 Gen 2 (2 rear, 1 x Type-A, 1 x Type-C), 5 x USB 3.2 Gen 1 (3 front, 2 x Type-A, 1 x Type-C, 2 rear), 1 x HDMI, 1 x DisplayPort, Realtek RTL8111H LAN, 6 x HD audio connectors, and an ATX form factor.

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.

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.

Features

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B550-A PRO

PRO Series

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 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 armour PCI-E slots. Supports 2-Way AMD Crossfire™
• Dragon Centre: A brand new software which integrates all MSI exclusive tools with user friendly user interface.

B550-A PRO Exclusive Feature

Flash BIOS Button

Simply use a USB key to flash any BIOS within seconds, without installing a CPU, memory or graphics card.

Digital PWM

Highest quality component digital power IC makes sure your system runs smoothly under the most extreme conditions.

Core Boost Technology

Combining premium layout design, that is ready for unleashing the maximum performance.

2oz Thickened Copper PCB

An enhanced PCB design improves heat dissipation and performance reliability.

PCI-E Steel Armour

Protecting VGA cards against bending and EMI for better performance, stability and strength.

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.

Cooling

M.2 Shield FROZR

World’s 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.

With MSI M.2 Shield FROZR

• Prevents throttling
• Maximises drive performance
• Higher maximum SSD speeds

Normal M.2 SSD

*Performance vary by model configuration

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.

MSI

• Smooth fan speeds
• Smooth sound levels

Others

• Spiking fan speeds
• Annoying sound levels

Pump Fan Ready

Optimised for Water Cooling

Designed to support the most popular All-In-One & customised 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.

Tested to Work Best With

• msi
• Bitspower
• Corsair
• ekwb
• Thermalkate - Cool All Your Life

Compatibility

• Ryzen™ 3000 Series Processors Support
• Extreme Stability & Compatibility Testing for Memory
• Windows 10 Certified

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.

Power Design - 10 + 2 + 1 Digital Power with Doubler Design

Unleash and sustain maximum performance with an aggressive VRM design built with a total of 10 phases Digital Power with Doubler Design. Combining exclusive Core Boost technology, PRO series motherboard is ready to sustain heavy daily work.

• 10 phases - Digital Power with Doubler Design
• 2 phases - SOC Power
• 1 phase - APU Power
• Digital PWM IC
• Load-line Calibration
• Overvoltage Protection

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.

DDR4 Boost & A-XMP - A Huge Step of DDR Performance

MSI OC LAB does not merely work hard on extreme overclocking. Compared to B450 motherboard memory A-XMP profile, MSI does have great improvement on performance and efficiency for B550 motherboards. Easy to enable A-XMP profile with auto power settings to get the best memory speed and stability.

Lower Latency and More Efficiency

• B550
• B450

Release Higher Memory Frequency

• Up to 4400 MHz
• B550
• 4133 MHZ
• B450

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.

Bios and Software

MSI Centre

MSI brand new MSI Centre 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 color 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 colorful masterpiece with ease. Splash any color you want with just a few clicks!

Product Registration

Register your MSI product to enjoy a host of benefits!

Click Bios 5

Get more from a loaded BIOS designed for ease of use. Fine-tune the motherboard for gaming performance, efficiency, or overclocking world records!

A-XMP

Choose from a preset A-XMP profile and automatically overclock compatible DDR memory.

M-Flash

Conveniently flash or upgrade the BIOS in a few minutes from the CMOS Setup Utility.

Hardware Monitor

Get immediate access to your critical hardware information in real-time including temperature, memory capacity, clock speed, and voltage.

Memory Try It

Get extreme speed out of your system memory and get more performance.

Search & Favourites

A permanent search & favourite option in the top right corner moves you through the BIOS menus quickly.

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 centre.