1.25Gb/s SFP Fiber Optic Transceiver Module 550m, 10km, 20km, 40km, 80km, 120km are available wavelength: 850nm, ... FeaturesDual data-rate of 1.25Gbps/1.063Gbps operation1310nm FP laser and PIN photodetector for 20km transmissionCompliant with SFP MSA and ... ,ISO certificate. 1.25G 1000BASE-LH SFP 1310nm 40km SFP fiber transceiver module 100% cisco compatible