B550M Pro4 Supports 3rd Gen AMD AM4 Ryzen™ / Future AMD Ryzen™ Processors 8 Power Phase Design, Digi Power Supports DDR4 4733+ (OC) 1 PCIe 4.0 x16, 1 PCIe 3.0 x16, 1 PCIe 3.0 x1, 1 M.2 Key E for WiFi Graphics Output Options: HDMI, DisplayPort, D-Sub AMD CrossFireX™ 7.1 CH HD Audio (Realtek ALC1200 Audio Codec), Nahimic Audio 6 SATA3, 1 Hyper M.2 (PCIe Gen4 x4), 1 M.2 (PCIe Gen3 x2 & SATA3) 2 USB 3.2 Gen2 (Rear Type A+C), 8 USB 3.2 Gen1 (4 Front, 4 Rear) Realtek Gigabit LAN