MSI A520M-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. SOCKET AMD Socket AM4 CPU (MAX SUPPORT) Support 3rd Gen AMD Ryzen™ Desktop Processors and AMD Ryzen™4000 G-Series Desktop Processors CHIPSET AMD® A520 Chipset DDR4 MEMORY Supports DDR4 1866/ 2133/ 2400/ 2667/ 2800/ 2933/ 3000/ 3066/ 3200 MHz by JEDEC MEMORY CHANNEL Dual DIMM SLOTS 2 MAX MEMORY (GB) 64 PCI-E X16 1 PCI-E GEN Gen3 PCI-E X1 1 SATAIII 4 M.2 SLOT 1 RAID 0/1/10 TPM (HEADER) 1 LAN 1x Realtek® RTL8111H Gigabit LAN USB 3.2 PORTS (FRONT) 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(Type A) SERIAL PORTS(FRONT) 1 AUDIO PORTS (REAR) 3 HD audio connectors DVI-D 1 HDMI 1 DIRECTX 12 FORM FACTOR MATX OPERATING SYSTEM Support for Windows® 10 64-bit