ASUS PRIME B550M-A Micro 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, 2 M.2 Slot 3 Year Warranty with ASUS Overview Introducing the ASUS PRIME B550M-A, perfect for everyday users who want the stable performance you expect in a smaller form factor. Expertly engineered to unleash the full potential of 3rd Generation AMD Ryzen processors. Jam-packed with features like the ground-breaking PCI-E 4.0 technology to give you lightning speeds, a robust power design, and USB 3.2 Gen2 Type-A Rear IO connectivity. The ASUS AURA RGB Header, comprehensive cooling solutions, and intelligent tuning options all help to offer the best experience possible. The PRIME B550M-A motherboard provides both daily users and DIY PC builders a range of performance tuning options via intuitive software and firmware features. Specifications Form Factor Micro ATX Socket AMD AM4 Socket Chipset AMD B550 Chipset Max CPU Support AMD Ryzen 5000 Series Memory Channel Dual Memory Support DDR4 Up to 3200MHz DIMM Slots 4 Max Memory 128GB PCIe Gen Gen4 PCIe x16 1 PCIe x1 2 (PCIe 3.0) SATA 3  4 M.2 Slots 2 (1 x PCIe 4.0, 1 x PCIe 3.0) Front Ports 2 x USB 3.2 Gen 1, 4 x USB 2.0 Rear Ports 4 x USB 3.2 Gen 1, 2 x USB 3.2 Gen 2, 1 x Mouse/Keyboard PS/2, 3 x HD Audio Connectors VGA Ports 1 DVI-D Ports 1 DisplayPort 0 HDMI Ports 1 Audio Chip Realtek ALC897 LAN Ports Realtek RTL8111H Gigabit LAN Operating System Windows 10 64-bit DirectX 12