MSI B550M-A PRO Mirco ATX Motherboard Key Features Micro ATX Motherboard AMD AM4 Socket with AMD B550 Chipset Supports DDR4 Memory up to 3200MHz Supports PCIe Gen4 4 SATA III Slots, 1 M.2 Slot 3 Year Warranty with MSI Overview Introducing the MSI B550M-A PRO Motherboard. The MSI B550M-A PRO supports the 3rd Gen AMD Ryzen processors with the addition of PCIe 4.0 technology for eye watering speeds. MSI DDR4 and Core Boost technologies incorporate a premium layout and digital power design to squeeze every ounce of performance from your components. To help provide better overall performance and stability, 2oz copper PCB is used, helping with additional thermal dissipation. PRO series motherboards help users work smarter by delivering an efficient and productive experience. Featuring stable functionality and high-quality assembly, PRO series motherboards provide not only optimised professional workflows but also less troubleshooting and longevity. Specifications Form Factor Micro ATX Socket AMD AM4 Socket Chipset AMD B550 Chipset Max CPU Support AMD Ryzen 3rd Gen Memory Channel Dual Memory Support DDR4 Up to 3200MHz DIMM Slots 2 Max Memory 64GB PCIe Gen Gen 4 PCIe x16 1 PCIe x1 1 (PCIe 3.0) SATA 3  4 M.2 Slots 1 Front Ports 2 x USB 3.2, 2 x USB 2.0 Rear Ports 4 x USB 3.2, 2 x USB 2.0, 1 x Mouse/1 x Keyboard PS/2, 3 x HD Audio Connectors VGA Ports 0 DVI-D Ports 1 DisplayPort 1.4 0 HDMI Ports 1 Audio Chip Realtek ALC897 LAN Ports Realtek RTL8111H Gigabit LAN Operating System Windows 10 64-bit DirectX 12