StarTech.com Dell EMC SFP-1G-SX Compatible SFP Module, 1000BASE-SX, 1GbE Multimode Fiber MMF Optic Transceiver, 1GE Gigabit Ethernet SFP, LC Connector, 550m, 850nm, DDM, Mini GBIC Module - Lifetime Warranty (SFP1GSXEMCST) - SFP (mini-GBIC) transceivermodul - 1GbE