Wide Compatibility:Compatible for Cisco GLC-T/GLC-TE/SFP-GE-T, SFP RJ45 Copper Module 10/100/1000M Auto-Negotiation. 10/100/1000BASE-T SFP Transceiver Module for Category 5e copper wire, RJ45 connector. Compliant with MSA standards. Reach 100m. Easy to use: Plug and play, fully hot-pluggable. Rotate the ring latch down at 90 degree angle to unlock, then pulling transceiver out from switch. High Quality: All of products are manufactured under strict quality control system, every module has been tested one by one on different switches before shipping, to ensure compatibility with different brand of switch. After-sales Service: 30-day free return, 1-year warranty, lifetime technology support.