This Cisco GLC-TE compatible SFP transceiver provides 10\/100\/1000Base-TX throughput up to 100m over a copper connection via a RJ-45 connector. It is capable of withstanding rugged environments and can operate at temperatures between -40 and 85C. This TX module supports 10\/100\/1000Base auto-negotiation and can be configured to fit your needs. Our transceiver is built to meet or exceed OEM specifications and is guaranteed to be 100% compatible with Cisco. It has been programmed, uniquely serialized, and tested for data-traffic and application to ensure that it will initialize and perform identically. All of our transceivers comply with Multi-Source Agreement (MSA) standards to provide seamless network integration. This transceiver is Trade Agreements Act (TAA) compliant. We stand behind the quality of our products and proudly offer a limited lifetime warranty.