MSI B550M-A PRO Review & Specs

MSI B550M-A PRO AM4 DDR4 PCIe 4.0 SATA 6Gb/s M.2 USB 3.2 Gen 1 DVI/HDMI Micro-ATX

MSI B550M-A PRO AM4 DDR4 PCIe 4.0 SATA 6Gb/s M.2 USB 3.2 Gen 1 DVI/HDMI Micro-ATX

- MSI

★ ★ ★ ★ ☆
(4 reviews)

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  • 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
  • 2Oz Thickened Copper PCB: An Enhanced PCB Design Improves Heat Dissipation And Performance Reliability

Specifications Overview

Model b550m-a pro
Release Date November 2020

* First availability for purchase, it may not correspond to the actual market launch date.

Series PRO
Socket AM4
Form factor Micro ATX
Chipset AMD B550
Supported Memory DDR4:
1866Mhz 2133Mhz 2400Mhz 2666Mhz 2800Mhz 2933Mhz 3000Mhz 3200Mhz 3466Mhz 3600Mhz 3733Mhz 3866Mhz 4000Mhz 4133Mhz 4266Mhz 4400Mhz 4600Mhz
* High clock speeds may require enabling the XMP profile in the motherboard BIOS
** RAM support may also depend on the CPU memory controller
ECC RAM Support
Audio Chipset Realtek ALC892/ALC897 Codec
Audio Channels 7.1 Channels
LAN Chipset Realtek RTL8111H
Max LAN Speed 10/100/1000Mbps
SLI Support
CrossFire Support
RAID Support
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
Wireless LAN
PCI-Express x16 Slots 1
PCI-Express x4 Slots 0
PCI-Express x1 Slots 1
SATA 6 Gbps Ports 4
SATA Express Ports 0
M.2 Ports 1
M.2 Devices support
  • 2242 / 2260 / 2280 - M Key
RAM Slots 2
Maximum Supported RAM 64GB
Onboard USB 2.0 2
Onboard USB 3.2 Gen 1 1
Onboard USB 3.2 Gen 2 0


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