The Transition Networks TN-SFP-xxx series small form factor pluggable (SFP) transceiver modules are designed to install in any SFP port, connect multimode 1000Base-SX or single mode 1000Base-LX fiber-optic cable to the network through the SFP connector. The TN-SFP-xxx transceivers are designed for bidirectional serial-optical data communications such as Gigabit Ethernet or fiber channel at speeds up to 1.25 Gbps.