MSI 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. SOCKET AMD Socket AM4 CHIPSET AMD® B550 Chipset MEMORY CHANNEL Dual DIMM SLOTS 4 MAX MEMORY (GB) 128 PCI-E X16 1 PCI-E GEN Gen4 / Gen3 PCI-E X1 2 SATAIII 4 M.2 SLOT 2 RAID 0/1/10 TPM (HEADER) 1 WIFI & BLUETOOTH WiFi-AC, Bluetooth 4.2 USB 3.2 PORTS (FRONT) 1(Gen 1, Type C), 2(Gen 1, Type A) USB 3.2 PORTS (REAR) 4(Gen 1, Type A) USB 2.0 PORTS (FRONT) 4 USB 2.0 PORTS (REAR) 2 SERIAL PORTS(FRONT) 1 AUDIO PORTS (REAR) Realtek® ALC892/ALC897 Codec DISPLAYPORT 1 VGA 1 HDMI 1 DIRECTX 12 CPU SUPPORT Support for Windows® 10 64-bit FORM FACTOR MATX