StarTech.com HPE J4858C Compatible SFP Module, 1000BASE-SX, 1GbE Multi Mode (MMF) Fiber Optic Transceiver, 1GE Gigabit Ethernet SFP, LC Connector, 550m, 850nm, DDM, HPE 1400, 1700, 1820 - Lifetime Warranty (J4858CST) - SFP (mini-GBIC) transceivermodul - 1GbE