GBIC transceiver is short name for the Gigabit Interface Converter, it is a media conversion device between Gigabit Ethernet and fiber optic networks, via the GBIC transceiver, Gigabit network equipment can directly connect to copper wires, single mode fiber ports or multimode fiber ports.

GBIC has its multi sources agreement as the industrial standard, this help manufacturers save cost to develop their each own standard and solve the problem of compatibility, GBIC transceivers could also benefit the users, because the equipment support GBIC can fit to use different kinds of GBIC transceivers from different suppliers, what is more, GBIC is hot pluggable, this enable users to modify the connections as they need – just change the GBIC transceivers to be they need.