Planet GT-1205A 3-Port Gigabit SFP Media Converter (1 TP, 2 SFP) Complies with IEEE 802.3 10Base-T, IEEE 802.3u 100Base-TX, IEEE 802.3ab 1000Base-T, IEEE 802.3z 1000Base-SX / LX IEEE 802.3x Full-duplex Flow-Control, Back-Pressure in Half-duplex eliminate packets loss Dual 1000Base-SX / LX SFP Fiber-Optic Slots One 10/100/1000Base-T Copper, auto MDI/MDIX function Compact in size, easy installation