Product DescriptionHP J4858CLAPR ProCurve X121 1.25Gb/s 1000Base-SX Multi-Mode Fibre 850nm 550m Duplex LC Connector SFP Transceiver ModuleProduct Condition:RefurbishedGeneral InformationProduct LineProCurve Product SeriesX121 Product TypeSFP Technical InformationMaximum Data Transfer Rate1.25 Gb/sEthernet StandardGigabit Ethernet Fiber Optic ModeMulti-mode OS PlatformPC Expansion Slots DetailsSFP Transciever-Modules UsageSwitching Network QoSYes Cable Standard Fiber/Twisted Pair850 nm Maximum Distance Supported550 mInterfaces/Ports Details x x LC LC Connector,Duplex Connector,Duplex 1000Base-SX 1000Base-SX Network Network Expansion Slot Expansion Slot Optical Fiber Optical Fiber Physical CharacteristicsForm FactorConnector,Duplex MiscellaneousCompliance StandardsWEEE,CE,RoHS Assembly RequiredYes Eco FriendlyYes