1.25Gb/s SFP Fiber Optic Transceiver Module 550m, 10km, 20km, 40km, 80km, 120km are available wavelength: 850nm, ... host systems with SGMII interface Applications:1Gigabit Ethernet over Cat 5 cable Standards:Compatible with IEEE 802.3zCompatible with FDA 21 ... ,RoHs,FCC,ISO certificate. Cost effective. 1000BASE-T SFP transceiver module for Category 5 copper wire RJ-45 connector