1.25Gb/s SFP Fiber Optic Transceiver Module 550m, 10km, 20km, 40km, 80km, 120km are available wavelength: 850nm, ... to physical layer IC via 2-wire serial bus1000 BASE-T operation in host systems with SERDES interface10/100/1000Mbps compliant ... Quality with CE,RoHs,FCC,ISO certificate. Cost effective. 1000BASE-T SFP transceiver module for Category 5 copper wire RJ-45 connector