SFP to RJ45 CAT 5e copper wire, RJ45 copper connector, 100m, 1000BASE-T Serders interface SFP Transceiver 10/100/1000Mb Auto-Negotiation ^^ 1G SFP RJ45Compatible for Arista SFP-1G-T, 1000BASE-T SFP Transceiver RJ45, 1G, Copper, 100 meters, 1.25G bps, RJ-45 connector, hot and play ^^ Application1000Base-T Gigabit Ethernet over Cat 5 cable and switch, router, server interface with RJ45 connector. ^^ STANDARDS MSA Compliant, IEEE 802. 3-2002 and IEEE 802.3 abwhich ^^ 3 Warranty-30-Days Free-returned, 65-Days Free-replacement, 5-Years Free-maintenance, Fibermall supports regular custom service for your options.