StarTech.com MSA Uncoded SFP+ Module, 10GBASE-BX, 10 Gigabit Ethernet Upstream BiDi Fiber Single Strand SFP+ SMF, LC 10km, Bi-Directional SFP+ Transceiver Module (Mini-GBIC), Upstream BiDi - Lifetime Warranty (SFP-10GB-BX-U-STA-ST) - SFP+ transceivermodul - 10GbE