This Cisco GLC-T compatible SFP transceiver provides 10/100/1000 Base-TX throughput up to 100m over FALSE using a RJ-45 connector. It is guaranteed to be 100% compatible with the equivalent Cisco transceiver. This easy to install, hot swappable transceiver has been programmed, uniquely serialized & data-traffic & application tested to ensure that it will initialize & perform identically. It is built to meet or exceed the specifications of Cisco, as well as to comply with MSA (Multi-Source Agreement) standards to ensure seamless network integration. All of our transceivers are Trade Agreements Act (TAA) compliant. We stand behind the quality of our products & proudly offer a limited lifetime warranty.