MSI's 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.
MSI PRO series motherboards support all the latest storage standards, which allows users to connect any ultra-fast storage device. Higher efficiency makes your work
An enhanced PCB design with 2oz thickened copper increases conductivity, improving heat dissipation and performance reliability especially during overclocking.
- 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, up to 4400(OC) MHz
- Lightning Fast Experience: PCIe 4.0, Lightning Gen4 x4 M.2 with M.2 Shield Frozr, AMD Turbo USB 3.2 Gen 2
- Premium Thermal Solution: Extended Heatsink Design with additional choke thermal pad and 7W/mK pad, and M.2 Shield Frozr are built for high performance system and non-stop works
- Powerful Design: Core Boost, Digital PWM IC, 2oz Thickened Copper PCB, Creator Genie, DDR4 Boost
- Audio Boost: Reward your ears with studio grade sound quality
- Multi-GPU: With Steel armor PCI-E slots. Supports 2-Way AMD Crossfire™
- Dragon Center: A brand new software which integrates all MSI exclusive tools with user friendly user interface.
Model Name: B550-A-Pro
CPU (MAX SUPPORT): RYZEN 9
SOCKET: AMD Socket AM4
CHIPSET: AMD® B550 Chipset
1866/ 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 CHANNEL: Dual
DIMM SLOTS: 4
MAX MEMORY (GB): 128
PCI-E X16: 2
PCI-E GEN: Gen4 / Gen3
PCI-E X1: 2
M.2 SLOT: 2
TPM (HEADER): 1
LAN: 1x 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): Realtek® ALC892/ALC897 Codec
FORM FACTOR: ATX
OPERATING SYSTEM: Support for Windows® 10 64-bit
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