MSI B550-A PRO PRO series helps users work smarter by delivering an efficient and productive experience. Featuring stable functionality and high-quality assembly, PRO series motherboards provide not only optimized professional workflows but also less troubleshooting and longevity.
With more cores’ processors, thermal and power design is more important to make sure the temperature keeps lower. MSI extended PWM heatsink with 7W/mK thermal pad ensures even high-end processors to run in full speed with MSI motherboards.
SOCKETAM4
CPU (MAX SUPPORT)RYZEN 9
CHIPSETAMD® B550 Chipset
DDR4 MEMORY1866/ 2133/ 2400/ 2667/ 2800/ 2933/ 3000/ 3066/ 3200/ 3466/ 3600/ 3733/ 3866/ 4000/ 4133/ 4266/ 4400 + Mhz by JEDEC and A-XMP OC MODE
MEMORY CHANNELDual
DIMM SLOTS4
MAX MEMORY (GB)128
PCI-E X162
PCI-E GENGen4 / Gen3
PCI-E X12
SATAIII6
M.2 SLOT2
RAID0/1/10
TPM (HEADER)1
LAN1x Realtek® RTL8111H Gigabit LAN
USB 3.2 PORTS (FRONT)1(Gen 1, Type C), 2(Gen 1, Type A)
USB 3.2 PORTS (REAR)1(Gen 2, Type C), 1(Gen 2, Type A), 2(Gen 1, Type A)
USB 2.0 PORTS (FRONT)4
USB 2.0 PORTS (REAR)4
SERIAL PORTS(FRONT)1
AUDIO PORTS (REAR)6 HD audio connectors
DISPLAYPORT1
HDMI1
DIRECTX12
FORM FACTORATX
CROSSFIREY
OPERATING SYSTEMSupport for Windows® 10 64-bit