StarTech.com Cisco SFP-10G-BX-U-60 Compatible SFP+ Module, 10GBASE-BX, 10 Gigabit Ethernet Bi-Directional (BiDi) Fiber Single Strand SFP+, LC 60km, Cisco ASR9000ASR1000, NCS5500, Upstream - Lifetime Warranty (SFP-10G-BX-U-60-ST) - SFP+ transceiver module - 10 GigE