Besides fiber optic cables, 10G Ethernet SFP+ transceivers can transfer data over copper cables, like twin-axial cabling or twisted pair cabling. This kind of SFP+ transceiver is equipped with a RJ-45 connector on one side, as the below figure shows. It is called 10GBase-T SFP+ transceiver. With cat6, cat6a...
A Simple Application of 10GBase-T Transceiver in Copper Network
