... .FP Laser SFP Package: 1.25Gb/s SFP Cisco Compatiable SFP module ,1.25g,550 M reach (GLC-SX-MM)FeaturesHot ... +3.3V single power supplyPower consumption less than 1.5WOperating case temperature: -5~+70°C Compatible ... SMC, Foundry, Huawei, DlinkProfessional supply: SFP,GBIC,BIDI SFP,XFP,SFP+,X2 and XENPAK,CWDM,DWDM.OEM&ODM ... ,Finisar,3com, etc. Cisco Compatiable SFP module ,1.25g,550 M reach (GLC-SX-MM)