The 1000Base-T Gigabit Interface Converter (GBIC) is an ideal solution for current Gigabit Ethernet switch with GBIC interfaces to provide 1000Base-T Auto-Negotiation or Full Duplex interconnection over existing UTP-5 copper infrastructures. Base on the GBIC specification 5.4. The 1000Base-T GBIC provides full compatible with the existing Ethernet switch system on the market