StarTech.com Dell EMC SFP-1G-ZX Compatible SFP Module, 1000BASE-ZX, 1GbE Single Mode (SMF) Fiber SMF Optic Transceiver, 1GE Gigabit Ethernet SFP, LC Connector, 80km, 1550nm, DDM, Mini GBIC - Lifetime Warranty (SFP1GZXEMCST) - SFP (mini-GBIC) transceivermodul - 1GbE