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    MSI PRO B550-A PRO AM4 AMD B550 SATA 6Gb/s USB 3.0 ATX AMD Motherboard

    Save even more w/ combo purchase, limited offer

    (1,866)(138) Write a Review
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    • B550-A PRO
    • B550M PRO-VDH WIFI
    • MAG B550 TOMAHAWK
    • MAG B550 TOMAHAWK MAX WIFI
    • MAG B550M BAZOOKA
    • MAG B550M MORTAR
    • MAG B550M MORTAR WIFI
    • MPG B550 GAMING CARBON WIFI
    • MPG B550 GAMING PLUS
    • PRO B550-VC
    • PRO B550M-VC WIFI
    • B550 Gaming Gen 3
    • MAG B550M MORTAR MAX WIFI DDR4
    • AMD B550
    • Supports AMD Ryzen 5000 Series / 4000 G-Series / 3000 Series processors *
    • * Not compatible with AMD Ryzen 5 3400G & Ryzen 3 3200G.
    • DDR4 4400+ / 4266 / 4133 / 4000 / 3866 / 3733 / 3600 / 3466 / 3200 / 3066 / 3000 / 2933 / 2800 / 2667 by A-XMP OC MODE
    • DDR4 3200 / 3066 / 3000 / 2933 / 2800 / 2667 / 2400 / 2133 / 1866 by JEDEC
    • 1DPC 1R Max speed 4800
    • 1DPC 2R max speed 3866
    • 2DPC 1R max speed 4000
    • 2DPC 2R max speed 3600
    +
    +
    Overview
    Specs
    Reviews (1,866)
    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 October 7, 2024 and December 31, 2024 you will have until January 31, 2025 to return your product.
    • Return for refund until: January 31, 2025
    • Return for replacement until: January 31, 2025
    • This item is covered by Newegg.ca's Extended Holiday Return Policy. Read full return policy for details.
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