MSI MB Meg B550 Unify-x AM4 B550 64GB DDR4 PCIE ATX


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MEG Model B550 UNIFY-X

Manufacturer Part#  B550UNIFYX

UPC Code: 824142233238

Provantage Code:  MSTB11F

Condition:  Factory New

  • Product Type: Desktop Motherboard
  • Number of Total Expansion Slots: 4
  • Total Number of USB Ports: 8
  • Maximum Memory Supported: 128 GB
  • Number of SATA Interfaces: 6
  • TAA Compliant: No

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MSI B550UNIFYX Specifications

    MSI MB Meg B550 Unify-x AM4 B550 64GB DDR4 PCIE ATX

At a Glance

    • 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, Dual Channel 5300(OC) MHz+ (MAX5800)
    • Quadruple M.2 Connectors: Maximum onboard 4x M.2 slots, support the latest Gen 4 solution with up to 64GB/s bandwidth for maximum transfer speed.


    The MEG series seeks to transcend current gaming products, the flagship model designed to push the limits of what an extreme gaming series can be. Combining the strengths of our existing arsenal with new innovative technology; this results in significant improvements in operational and gaming efficiency.

Package Contents

    • MEG B550 UNIFY-X Desktop Motherboard
    • User Manual
    • DIY Stands Set
    • Wifi-Antenna
    • Dricer DVD
    • Quick Installation Guide
    • Product Registration Card
    • MSI Product Catalog
    • Promotion Card
    • MSI Case Badge
    • CORSAIR RGB LED Extension Cable
    • 1 to 2 RGB LED Extension Y Cable
    • Rainbow RBF LED Extension Cable
    • 2 x SATA Cables
    • SATA Cables Labels

Additional Product Images


Product NameMSI MB Meg B550 Unify-x AM4 B550 64GB DDR4 PCIE ATX
Manufacturer Part NumberB550UNIFYX
Product TypeDesktop Motherboard
Chipset ManufacturerAMD
Number of Memory Slots4
Number of SATA Interfaces6
Number of PCI Express x1 Slots2
Onboard VideoCPU Dependent Video
RAID SupportedYes
Number of Total Expansion Slots4
Number of PCI Express x16 Slots2
Total Number of USB Ports8
Total Number of Onboard USB Ports7
Total Number of PCI Express Slots4
Memory Form FactorDIMM


Number of M.2 Interfaces4
Number of USB 3.2 Ports4
Number of Onboard USB 3.2 Ports3
Memory TechnologyDDR4 SDRAM
Processor SocketSocket AM4
Form FactorATX
Processor SupportedRyzen 3

Ryzen 5

Ryzen 7

Ryzen 9

Ryzen 7 PRO

Ryzen 5 Pro

Ryzen 3 PRO

Total Processor Supported1
Controller TypeSerial ATA/600
Maximum Memory Supported128 GB
Audio Channels7.1
Wireless LANYes
Wireless LAN StandardIEEE 802.11 a/b/g/n/ac/ax
Number of Network (RJ-45) Ports1
Number of USB 2.0 Ports4
Number of Onboard USB 2.0 Ports4
Memory Speed Supported1866 MHz

2133 MHz

2400 MHz

2667 MHz

2800 MHz

2933 MHz

3000 MHz

3066 MHz

3200 MHz

2667 MHz (O.C.)

2800 MHz (O.C.)

2933 MHz (O.C.)

3000 MHz (O.C.)

3066 MHz (O.C.)

3466 MHz (O.C.)

3600 MHz (O.C.)

3733 MHz (O.C.)

3866 MHz (O.C.)

4000 MHz (O.C.)

4133 MHz (O.C.)

4266 MHz (O.C.)

4400 MHz (O.C.)

4533 MHz (O.C.)

4600 MHz (O.C.)

4733 MHz (O.C.)

4800 MHz (O.C.)

4866 MHz (O.C.)

5000 MHz (O.C.)

5100 MHz (O.C.)

5300 MHz (O.C.)

5800 MHz (O.C.)

2.5Gigabit EthernetYes
Country of OriginChina
Product ModelB550 UNIFY-X
Product LineMEG
RAID Levels0



Limited Warranty3 Year
Brand CompatibilityAMD
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