A gigabit interface converter (GBIC) is a modular transceiver type that connects a device, like a router, to a network through a copper cable or fiber optic. It can support different network protocols and data rates such as Fast Ethernet, Gigabit Ethernet, ATM, and Fibre Channel.

Small Form-Factor Pluggable (SFP), smaller, and more advanced modules have replaced GBICs.

SFP modules provide similar functionality to GBICs but with a reduced form factor, making them more suitable for modern, compact networking equipment. However, some older networking hardware still uses GBIC modules.

Gigabit Interface Converter Examples