8.5G1000Base-sx SFP 850nm 550m SFP Optical Transceiver module High Quality with CE,RoHs,FCC,ISO certificate FeaturesHot-PluggableSingle +3.3V ... can cooperate with you.WarrantySFP/GBIC/CWDM/DWDM/XFP/SFP+/XENPAK/X2/BIDI SFP&GBIC comes with 3-year warranty from the ... : DHL, FedEx,EMS,TNT, UPS and so on. 8.5G SFP 850nm 550m 1000Base-SX SFP transceiver, SFP module