GIGABYTE B550 UD AC ATX Motherboard - Socket AM4 - AMD B550 Chipset - Supports DDR4-4733(OC) - 1x PCIe 4.0 x16 - 4 x PCIe 3.0 x1 - 2x M.2 Socket3 - HDMI 2.1 - USB 3.2 Gen2 Type-A - Realtek GbE LAN - Wi-Fi 802.11ac