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MSI PRO B550M-A PRO AM4 AMD B550 SATA 6Gb/s Micro ATX AMD Motherboard

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  • AMD B550
  • Support 3rd Gen AMD Ryzen Desktop Processors and AMD Ryzen 4000 G-Series Desktop Processors
  • Supports DDR4 4600+/ 4400/ 4266/ 4133/ 4000/ 3866/ 3733/ 3600/ 3466/ 3200/ 3066/ 3000/ 2933/ 2800/ 2667 MHz by A-XMP OC MODE
  • Supports DDR4 3200/ 3066/ 3000/ 2933/ 2800/ 2667/ 2400/ 2133/ 1866 MHz by JEDEC
  • 1DPC 1R max speed 4600 MHz
  • 1DPC 2R max speed 3866 MHz
Specs
Reviews (5)

Learn more about the MSI B550M-A PRO

Model
Brand MSI
Series PRO
Model B550M-A PRO
Supported CPU
CPU Socket Type AM4
CPU Type Support 3rd Gen AMD Ryzen Desktop Processors and AMD Ryzen 4000 G-Series Desktop Processors
Chipsets
Chipset AMD B550
Memory
Number of Memory Slots 2x288pin (DDR4)
Memory Standard Supports DDR4 4600+/ 4400/ 4266/ 4133/ 4000/ 3866/ 3733/ 3600/ 3466/ 3200/ 3066/ 3000/ 2933/ 2800/ 2667 MHz by A-XMP OC MODE
Supports DDR4 3200/ 3066/ 3000/ 2933/ 2800/ 2667/ 2400/ 2133/ 1866 MHz by JEDEC

1DPC 1R max speed 4600 MHz
1DPC 2R max speed 3866 MHz
Maximum Memory Supported 64GB
Channel Supported Dual Channel
Expansion Slots
PCI Express 4.0 x16 1 x PCIe 4.0/3.0 x16 slot
PCI Express x1 1 x PCIe 3.0 x1 slot
Storage Devices
SATA 6Gb/s 4 x SATA 6Gb/s
M.2 1 x M.2 slot (Key M) (from AMD Processor):
Supports PCIe 4.0/3.0 *
Supports SATA 6Gb/s
Supports 2242/2260/2280 storage devices

* The supported specification depends on installed processor.
SATA RAID 0/1/10
Onboard Video
Onboard Video Chipset Supported only by CPU with integrated graphic:
1 x HDMI 2.1 port, supports a maximum resolution of 4096x2160@60Hz12
1 x DVI-D port, supports a maximum resolution of 1920x1200@60Hz1
Maximum shared memory of 16GB

1. Available for the processor with integrated graphics.
2. Graphics specifications may vary depending on the CPU installed.
Onboard Audio
Audio Chipset Realtek ALC892/ALC897 Codec
Audio Channels 7.1 Channels
Onboard LAN
LAN Chipset Realtek RTL8111H
Max LAN Speed 1Gbps
Rear Panel Ports
Back I/O Ports 1 x DVI-D / 1 x HDMI / 1 x LAN (RJ45) / 2 x PS/2 / 2 x USB 2.0/1.1 / 3 x Audio Jacks / 4 x USB 3.2 Gen 1
Internal I/O Connectors
Onboard USB 1 x USB 3.2 Gen 1 5Gbps connector (supports additional 2 USB 3.2 Gen 1 5Gbps ports)
2 x USB 2.0 connectors (supports additional 4 USB 2.0 ports)
Other Connectors 1 x 4-pin CPU fan connector
1 x 4-pin system fan connectors
1 x Front panel audio connector
2 x System panel connectors
1 x Chassis Intrusion connector
1 x TPM module connector
1 x Clear CMOS jumper
Physical Spec
Form Factor Micro ATX
LED Lighting None RGB
Dimensions (W x L) 9.3" x 7.9"
Power Pin 1 x 24-pin ATX main power connector
1 x 4-pin ATX 12V power connector
Software Feature
Windows 11 Supported
Features
Features Support 3rd Gen AMD Ryzen Desktop Processors and AMD Ryzen 4000 G-Series Desktop Processors

Supports DDR4 Memory, up to 4600(OC) MHz

Lightning Fast Experience: PCIe 4.0, Lightning Gen4 x4 M.2

Core Boost: With premium layout and digital power design to support more cores and provide better performance

DDR4 Boost: Advanced technology to deliver pure data signals for the best performance and stability

2oz Thickened Copper PCB: An enhanced PCB design improves heat dissipation and performance reliability

Audio Boost: Reward your ears with studio grade sound quality

Dragon Center: A brand new software which integrates all MSI exclusive tools with user friendly user interface
Additional Information
Date First Available December 09, 2020

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

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

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