StarTech.com Dell EMC SFP-10G-BX40-U Compatible SFP+ Module, 10GBASE-BX-U, 10 Gigabit Ethernet Bi-Directional (BiDi) Fiber Single Strand SFP+, LC 40km, Mini GBIC Transceiver SFP+ Module - Lifetime Warranty (SFP10GBX40US) - SFP+ transceivermodul - 10GbE