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MSI B550-A PRO AMD B550 Socket AM4 (Supports 3rd Gen AMD Ryzen™ Processors) ATX 4 DIMM DDR4, PCIE 4.0, GBLAN, Mystic Light JRAINBOW (ARGB)
MSI B550-A PRO AMD B550 Socket AM4 (Supports 3rd Gen AMD Ryzen™ Processors) ATX 4 DIMM DDR4, PCIE 4.0, GBLAN, Mystic Light JRAINBOW (ARGB)
MSI B550-A PRO AMD B550 Socket AM4 (Supports 3rd Gen AMD Ryzen™ Processors) ATX 4 DIMM DDR4, PCIE 4.0, GBLAN, Mystic Light JRAINBOW (ARGB)
MSI B550-A PRO AMD B550 Socket AM4 (Supports 3rd Gen AMD Ryzen™ Processors) ATX 4 DIMM DDR4, PCIE 4.0, GBLAN, Mystic Light JRAINBOW (ARGB)
MSI B550-A PRO AMD B550 Socket AM4 (Supports 3rd Gen AMD Ryzen™ Processors) ATX 4 DIMM DDR4, PCIE 4.0, GBLAN, Mystic Light JRAINBOW (ARGB)
MSI B550-A PRO AMD B550 Socket AM4 (Supports 3rd Gen AMD Ryzen™ Processors) ATX 4 DIMM DDR4, PCIE 4.0, GBLAN, Mystic Light JRAINBOW (ARGB)
MSI

Part #: B550-A PRO

Item Code: MBMSI00203

MSI B550-A PRO AMD B550 Socket AM4 (Supports 3rd Gen AMD Ryzen™ Processors) ATX 4 DIMM DDR4, PCIE 4.0, GBLAN, Mystic Light JRAINBOW (ARGB)

4
2 Reviews
15-day Low Price Guarantee
MSI B550-A PRO AM4 B550 DDR4
MSI B550-A PRO AM4 B550 DDR4
MSI B550-A PRO AM4 B550 DDR4
MSI B550-A PRO AM4 B550 DDR4
MSI B550-A PRO AM4 B550 DDR4
MSI B550-A PRO AM4 B550 DDR4
Model: B550-A PRO
MAG B550 TOMAHAWK MAX WIFI
MAG B550 TOMAHAWK
MPG B550 GAMING PLUS
B550-A PRO
PRO B550-VC
B550 GAMING GEN3
B550M PRO-VDH WIFI
PRO B550M-VC WIFI
$169.99
$149.99
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$142.49
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Overview

B550-A PRO
B550-A PRO
exclusive features
MSI B550-A PRO CORNERSTONE overview
MSI Flash BIOS Button Flash BIOS Button
Simply use a USB key to flash any BIOS within seconds, without installing a CPU, memory or graphics card.
MSI Core Boost Technology Core Boost Technology
Combining premium layout design, that is ready for unleashing the maximum performance.
MSI 2oz Thickened Copper PCB 2oz Thickened Copper PCB
An enhanced PCB design improves heat dissipation and performance reliability.
MSI Digital PWM Digital PWM
Highest quality component digital power IC makes sure your system runs smoothly under the most extreme conditions.
MSI PCIe Steel Armor PCIe Steel Armor
Protecting VGA cards against bending and EMI for better performance, stability and strength.
B550-A PRO
PREMIUM THERMAL SOLUTION
MSI B550-A PRO THERMAL overview
MSI 7W/mK Thermal Pad 7W/mK Thermal Pad
Preminum 7W/mK thermal pad covered both MOSFET and chokes, provides better heat transfer to the heatsink.
MSI Extended Heatsink Extended Heatsink
MSI extended PWM heatsink and enhanced circuit design ensures even high-end processors to run in full speed.
MSI Pump Fan Support Pump Fan Support
Control watercooling pump speeds for best flow and noise control.
MSI M.2 Shield Frozr M.2 Shield Frozr
Strengthened built-in M.2 thermal solution. Keeps M.2 SSDs safe while preventing throttling, making them run faster.
B550-A PRO
HIGH-SPEED TRANSMISSION
MSI B550-A PRO LIGHTNING overview
MSI Turbo USB Turbo USB
Featuring the TURBO USB 3.2 GEN 2 10Gbps, with reversible Type-C connector.
MSI DDR4 Boost DDR4 Boost
The Fully isolated DIMM slots to deliver pure data signals for the best gaming and overclocking performance.
MSI Lightning Gen 4 Solution Lightning Gen 4 Solution
The latest Gen 4 PCI-E and M.2 solution with up to 64GB/s bandwidth for maximum transfer speed.
MSI B550-A PRO & 7G07R
MSI B550-A PRO CORE BOOST
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. Not only supporting multi-core CPU, but creating the perfect conditions for your CPU overclocking.
MSI B550-A PRO 10 + 2 + 1 DIGITAL POWER WITH DOUBLER 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
MSI B550-A PRO EXTENDED HEATSINK
EXTENDED HEATSINK
Metal extended heatsink enlarge the surface of heat dissipation, ensures even high-end processors to run in full speed.
MSI B550 -A PRO PCB WITH 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.
MSI B550-A PRO USB Type-C ready in both Front case panel & Rear IO
USB Type-C ready in both Front case panel & Rear IO
Get all the performance benefits from the USB Type-C connector. This reversible USB connector allows for effortless connecting of USB devices.
MSI B550-A PRO LIGHTNING GEN4 M.2 WITH M.2 SHIELD FROZR
LIGHTNING GEN4 M.2 WITH M.2 SHIELD FROZR
Cooling your NVMe SSD delays throttling which results in higher overall performance. Part of the motherboards heatsink design which helps avoid SSD throttling by offering the best thermal protection.
MSI B550 -A PRO LIGHTNING GEN 4 SOLUTION
LIGHTNING GEN 4 SOLUTION
The latest Gen4 PCI-E and M.2 solution with up to 64GB/s bandwidth for maximum transfer speed. PCIe 4.0 maintains both backward and forward compatibility with older and newer specifications.
MSI B550-A PRO UNMATCHED MEMORY PERFORMANCE
UNMATCHED MEMORY PERFORMANCE
MSI motherboards are crammed with features to fuel your system’s memory with more speed, higher overclockability and increased stability. Optimized traces and a fully isolated memory circuitry ensures perfect stability and performance, so you never have to worry about your system crashing.
MSI B550-A PRO EASY TO ARRANGE YOUR CABLES
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.
MSI B550-A PRO MULTIPLE GPU SUPPORTS AND STEEL ARMOR
MULTIPLE GPU SUPPORTS AND STEEL ARMOR

B550-A PRO supports multiple GPU solution. Optimal PCI-Express slot placement allows for better fitting and airflow. That way, you can enjoy the best graphics at the highest framerate jumping from your screen when running an AMD® CrossFire™ setup

Steel Armor has more solder points on the PCB for more strength and protects the PCI-Express signals against electromagnetic interference for a stutter-free user experience.





Specifications

Warranty & Returns

Reviews

2023-11-26

Reviewed by: Customer
Great motherboard with lots of I/O. The LTT motherboard tier list places this at A-tier and has sufficient VRM and power delivery to support my 5800X3D without holding it back.

MSI B550-A Pro has 10x 46A 4C029N/4C024N discrete MOSFETs for VCore and 4x for SoC, in doubled/teamed configuration for 5+2-phase VRM, fully heatsinked.

It has an internal USB 3.2 Gen 1 USB-C front panel header in case your case comes with a front panel USB-C port. It also includes a rear USB-C 3.2 Gen 2 port.

2023-11-24

Reviewed by: James
Its a good board but the picture says its 2.5gb lan - its only gigabit.
See all customer reviews

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