The RTL8211E-VB-CG is a highly integrated 10/100/1000 Mbps Gigabit Ethernet transceiver produced by Realtek. Commonly utilized in routers, switches, and network interface cards, it relies on the RGMII (Reduced Gigabit Media Independent Interface) to communicate with MAC processors. It operates on a 3.3V power supply and is housed in a 48-pin QFN package