MSI MAG B550M MORTAR AM4 SATA 6Gb/s Micro-ATX Motherboard

Conquer the Battlefield
The MAG series was born through rigorous quality testing and designed to be a symbol of sturdiness and durability. Focused on providing the best user experience, the MAG series has a simple installation process coupled with a friendly user interface making it the best choice for entry level gamers.

Exclusive Feature

Core Boost Technology
With premium layout design, that is ready for unleashing the maximum performance.

2oz Thickened Copper
4 layer PCB with 2oz thickened copper provides higher performance and long-lasting system stability without any compromise.

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

PCIe Steel Armor
Protecting VGA cards against bending & EMI for better performance, stability & strength.

Premium Thermal Solution

Extended Heatsink
MSI extended heatsink & enhanced circuit design ensures even high-end processors to run in full speed.

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

Pump Fan Support
Control watercooling pump speeds for best flow & noise control.

Heatsinks with 7W/mK Thermal Pad
7W/mK thermal pad provides better heat transfer to the heatsink.

High-Speed Transmission

Turbo USB
Featuring the Turbo USB 3.2 Gen 2 10Gbps with reversible Type-C connector.

2.5G LAN
Featuring 2.5G LAN with LAN manager delivers better network experience.

DDR4 Boost
The fully isolated DDR circuit to deliver pure data signals for the best gaming and overclocking performance.

Lightning Gen 4 Solution
The latest Gen 4 PCI-E and M.2 solution with up to 64GB/s bandwidth for maximum transfer speed.

Premium Hardware Design
With years of experience, MSI is no stranger to building high-performance motherboards. Our R&D and engineering teams have reviewed countless designs, evaluated a wide selection of high quality components, and developed products for reliability even under extreme conditions.

Cooling

Extended Heatsink Design: 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 and enhanced circuit design ensures even high-end CPU to run in full speed with MSI motherboards.

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.

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.

Pump Fan Ready: 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.

Power Solution

Structure: 8+2+1 Duet Rail Power System
Unleash and sustain maximum performance with an aggressive VRM design built with a total of 8 digital CPU power phases. Combining exclusive Core Boost technology, MAG series motherboard is ready to sustain heavy gaming loadings.

Core Boost
Core Boost technology combines MSI's premium layout and digital power design which allows for faster and undistorted current delivery to the CPU at pin-point precision. This creates the perfect conditions for multi-core CPU while high-loading operation.

Game Boost: 1- Second Overlocking!
MSI Game Boost enables one-second overclocking, giving you the performance boost you need to get more FPS.

More for Performance

Load-Line Calibration
What you set, is what you get. LLC makes sure your CPU voltage remains 100% stable under any load. This greatly improves stability when demanding more CPU performance.

Overvoltage Protection
Prevents potential short-circuit damage to the CPU and other critical components.

Digitall Power Design
A fully digital power design allows for faster and undistorted current delivery to the CPU at pin-point precision. Creating the perfect conditions for CPU overclocking.

DIY-Friendly

Pre-Installed IO Shielding
Featuring the pre-installed IO shielding, makes your installation process easier and safer. The patent-pending design protect your IO ports and also prevent electrostatic discharge damage, makes your motherboard a strong gaming foundation.

Easy BIOS Recovery with Flash BIOS Button
Run into trouble when updating your BIOS? Simply flash the old BIOS version back and continue gaming within minutes with Flash BIOS Button. Flash BIOS Button even works without a CPU, memory or graphics card installed!

Keep Out Zone
MSI motherboards circuitry ensure the case standoff keep out zones are pure and clean, preventing any component contact or damage to the motherboard.

More User Friendly Enhancements

XL Clip
The enlarged PCI-E clip helps you swap or remove your devices easier. Keep the PCI-E slot stronger and safer.

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.

EZ LED Control
A built-in LED button on the motherboard to control your light effect. Turn on/off your light in a second!

Protection

PCB With 2OZ Thickened Copper
An enhanced PCB design with 2oz thickened copper increases conductivity, improving heat dissipation and performance reliability especially during overclocking.

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 ESD protection doubles up the grounding layer around the mounting holes, preventing static discharge surges from damaging the motherboard.

Certified for Gaming
MSI motherboards has been built and tweaked for hardcore gaming. Feedback from the world's best esports players and rigorous testing sessions with demanding PC games has resulted in a motherboard that's both powerful and reliable.

Enhanced Performance
High performance MSI motherboards are loaded with advanced features and the latest technology to overwhelm any challenge at hand no matter whether you're a gamer, prosumer, or PC enthusiast.

Lightning GEN 4

Lightning GEN 4 M.2
Utilizing 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.

Storage Overview
Fast and future-ready Storage
MSI B550 motherboards support all the latest storage standards, which allows users to connect any ultra-fast storage device. Higher efficiency makes your work easier.

Memory
Extreme Stability & Compatibility Testing
MSI conducts thorough memory testing with the most popular memory brands under extreme conditions to ensure your system runs stable no matter what. Our memory partners include brands like Corsair, Crucial, Kingston, G.Skill and many more to optimize memory modules, configurations and even improve overclocking.

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.

Easy Overlocking with A-XMP Peofile
The A-XMP in MSI BIOS are tested and certified by MSI OC LAB. It is easy to enable with auto power settings to get the best memory speed and stability.

BIOS & Software

Dragon Center
MSI brand new Dragon Center unifies a suite of MSI software utilities into a single centralized application. Take control of advanced motherboards features and unleash endless possibilities.

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!

• Game Boost: Quickly overclock your CPU with a single button for more performance
• 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.