The GLCTEST is a Cisco GLC-TE compatible copper transceiver module that has been designed, programmed and tested to work with Cisco® brand switches and routers for extended temperatures. It delivers dependable 1 GbE connectivity over copper cable, for 1000BASE-T compliant networks, with a maximum distance of up to 100 m (328 ft). Technical Specifications: Maximum Data Transfer Rate: 1000 Mbps Type: Copper Connection Type: RJ45 Connector Maximum Transfer Distance: 100 m (328 ft) MTBF: 4,655,371 hours Power Consumption: Less than 1.3 Watts Digital Diagnostics Monitoring (DDM): No This SFP copper module is hot-swappable, making upgrades and replacements seamless by minimizing network disruptions. StarTech.com SFPs All StarTech.com SFP & SFP+ transceiver modules are backed by a lifetime warranty and free lifetime multilingual technical support. StarTech.com offers a wide variety of SFP modules and direct-attach SFP cables, providing the convenience and reliability you need to ensure dependable network performance.