StarTech.com Dell EMC SFP-10G-LR Compatible SFP+ Module, 10GBASE-LR, 10GbE Single Mode (SMF) Fiber SMF Optic Transceiver, 10GE Gigabit Ethernet SFP+, LC Connector, 10km, 1310nm, DDM, SFP+ - Lifetime Warranty (SFP10GLREMST) - SFP+ transceivermodul - 10GbE