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MSI PRO B550-A PRO AM4 AMD B550 SATA 6Gb/s ATX AMD Motherboard

In stock. Limit 10 per customer.
Ships from Canada.
  • B550-A PRO
  • B550M PRO-VDH WIFI
  • MAG B550 TOMAHAWK
  • MAG B550M BAZOOKA
  • MAG B550M MORTAR
  • MAG B550M MORTAR WIFI
  • MPG B550 GAMING CARBON WIFI
  • MPG B550 GAMING EDGE WIFI
  • MPG B550 GAMING PLUS
  • MPG B550I GAMING EDGE WIFI
  • AMD B550
  • Supports AM4 socket 3rd Gen AMD Ryzen processors, and future AMD Ryzen processors with BIOS update.
  • Supports DDR4 3200/ 3066/ 3000/ 2933/ 2800/ 2667/ 2400/ 2133/ 1866 MHz by JEDEC
  • Supports DDR4 4400+/ 4266/ 4133/ 4000/ 3866/ 3733/ 3600/ 3466/ 3200/ 3066/ 3000/ 2933/ 2800/ 2667 MHz by A-XMP OC MODE
  • 1DPC 1R Max speed 4800 MHz
  • 1DPC 2R max speed 3866 MHz
  • 2DPC 1R max speed 4000 MHz
  • 2DPC 2R max speed 3600 MHz
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Overview
Specs
Reviews
B550-A PRO
EXCLUSIVE FEATURES
B550-A PRO motherboard
icon-core_boost
Flash BIOS Button

Use a USB drive to flash the BIOS even without a CPU or memory.

icon-core_boost
Core Boost Technology

An optimized power circuit layout is ready to unleash maximum performance.

icon-2oz_thickened
2oz Thickened Copper PCB

An enhanced PCB material design improves heat dissipation and high-performance capabilities.

icon-digital_pwm
Digital PWM

A selection of the highest quality power delivery components lets the system run reliably even under extreme conditions.

icon-steel_armor
PCIe Steel Armor

Reinforced and shielded PCIe slots for strength and stability.

B550-A PRO
PREMIUM THERMAL SOLUTION
B550-A PRO motherboard
icon-k7
7W/mK Thermal Pad

Premium 7W/mK thermal pad covers both the MOSFET and chokes while providing better heat transfer to the heatsink.

icon-extended_heatsink
Extended Heatsink

Larger heatsink design for cooling and performance.

icon-pump_fan
Pump Fan Support

Control watercooling pump speeds for flowrate and noise control.

icon-m_2_shield
M.2 Shield Frozr

Sustain maximum high-speed M.2 SSD data transfer with M.2 SHIELD FROZR and prevent SSD thermal throttling.

B550-A PRO
HIGH-SPEED TRANSMISSION
B550-A PRO wifi motherboard
icon-turbo_usb
Turbo USB

Featuring TURBO USB 3.2 GEN 2 10Gbps with reversible Type-C connector.

icon-m_2_shield_frozr
DDR4 Boost

The memory circuit design has been optimized on a reserved section of the motherboard fully isolated from other circuits.

icon-lightning
Lightning Gen 4 Solution

Transfer data lightning fast across Gen 4 PCI-E and M.2 with up to 64GB/s bandwidth.

core boost of motherboard
CORE BOOST

Core Boost combines a reserved zone of optimized circuits and premium power delivery components to create a highly efficient power system capable of precise current output to the CPU.

the ports of the motherboard
10 +2 +1 DUET RAIL POWER SYSTEM

Unleash and sustain maximum performance with an aggressive VRM design built to supply stable and steady power delivery.

  • 10 phase Duet Rail Power System
  • 2 phase SOC Power
  • 1 phase APU Power
  • Digital PWM IC
extedned  heatsink of the motherboard
EXTENDED HEATSINK

An all-metal extended heatsink cover enlarges the heat dissipation surface allowing the CPU power system to reliably drive multi-core processors.

the 2oz thickened copper of the motherboard
PCB WITH 2OZ THICKENED COPPER

An enhanced PCB material design with 2oz thickened copper increases conductivity, improving heat dissipation and high-performance reliability.

the usb_type of the motherboard
USB TYPE-C READY - REAR IO & FRONT CASE PANEL SUPPORT

Effortlessly plug in devices with reversible USB Type-C.

LIGHTNING GEN4 of the motherboard
LIGHTNING GEN4 M.2 WITH M.2 SHIELD FROZR

Sustain maximum M.2 SSD data transfer with M.2 SHIELD FROZR. Prevent SSD thermal throttling with a heatsink that extends across the motherboard.

lightning_gen4 of the motherboard
LIGHTNING GEN 4 SOLUTION

Strike fast with MSI Lightning Gen 4 PCI-E. Attach ultra fast PCI-E 4.0 devices and enjoy up to 64GB/s unidirectional transfer bandwidth.

a chart showing different effect between DDR4 BOOST and OTHERS
UNMATCHED MEMORY PERFORMANCE

MSI takes memory stability and performance to the extreme. We've designed an optimized memory circuit design for reliability and tested compatibility extensively in partnership with major memory manufacturers.

port of the motherboard
EASY TO ARRANGE YOUR CABLES

Tuck away SATA and USB cables neatly with MSI Atypical PCB edge.

detail of the connection of the video
MULTIPLE GPU SUPPORT AND STEEL ARMOR

B550-A PRO supports AMD CrossFire multi GPU technology. PCI-E slot placements provide optimal airflow for graphics card cooling.

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 counts, Steel Armor shields the point of contact from electromagnetic interference.

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years
  • Read full details

Return Policies

    We want to ensure your holiday shopping this year is hassle-free. That’s why we’re automatically extending our return policies on almost every product! For purchases placed between November 1, 2020 and December 24, 2020 you will have until January 31, 2021 to return your product. There's nothing additional that you have to do!
  • Return for refund until: January 31, 2021
  • Return for replacement until: January 31, 2021
  • This item is covered by Newegg.ca's Extended Holiday Return Policy
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