The Realtek RTL8211F-CG / RTL8211FD-CG / RTL8211FI-CG / RTL8211FDI-CG is a highly integrated Ethernet transceiver that complies with 10Base-T, 100Base-TX, and 1000Base-T IEEE 802.3 standards. It provides all the necessary physical layer functions totransmit and receive Ethernet packets over CAT.5 UTP cable. The RTL8211FI and RTL8211FDI are manufactured to industrial