SFP Loopback Transceivers are used for testing on network hubs and other systems using MSA-compliant Small Form-factor Pluggable (SFP) optical transceivers. These loopbacks test port operation in equipment where SFP transceivers are to be installed in applications such as Ethernet, SONET, or Fiber Channel. SFP Loopback Transceivers have no optical input/output mechanism, as the electrical signals are simply received and then looped back to the port driver circuitry. The main physical features of SFP Loopback Transceivers are pull-release latch, Zinc die-cast form. The SFP Loopback Transceivers from Cozlink are RoHS compliant and support Gigabit Ethernet and Fibre Channel. Cozlink SFP Loopback Transceivers are leak-proof, power-efficient interconnects that help in rolling out the best connectivity solutions.