CPU: AMD Ryzen 5000 Series/ 5000 G-Series/ 4000 G-Series/ 3000 Series Desktop Processors, Socket: AM4, Chipset: B550, Memory: 4 x DIMM, Max. 128GB, DDR4, Memory Channel: Dual Channel, Ethernet: 1 x Intel 2.5Gb Ethernet, Wireless: Wi-Fi 6E, Bluetooth: 5.2, BIOS: 256 Mb Flash ROM, UEFI AMI BIOS, Operating System: Windows 11 Ready, Form Factor: ATX. ROG Strix B550 Gaming series motherboards offer a feature-set usually found in the higher-end ROG Strix X570 Gaming series, including the latest PCIe 4.0. With robust power delivery and effective cooling.