The Transition Networks TN-GLC-xxx series small form factor pluggable (SFP) tranceiver modules are designed to install in any SFP port allowing for 1000BaseT, 1000BaseSX or 1000BaseLX interfaces to the network through the SFP connector. The TNGLC- xxx tranceivers are Cisco compatible and are designed for bidirectional serial-optical data communication such as Gigabit Ethernet or fiber channel at speeds up to 1.25 Gbps.