Planet GT-802 10/100/1000Base-T to 1000Base-SX/LX Gigabit Media Converter 10/100/1000TX to 1000SX Speeds, with Multimode and SC Fiber Connection Plug-n-Play connectivity easily installs into any network Complies with IEEE 802.3ab and IEEE 802.3z Rigorously tested for reliability, built to last TWO YEAR WARRANTY & Reliable US Phone Support