100% CISCO SFP-10G-BXD-I COMPATIBLE: 10 Gigabit Ethernet BiDi Fiber Single Strand SFP+ works with Cisco switches like ASR9000, ASR1000, NCS5500, C3850, NCS540 and others INCREASE BANDWIDTH ON EXISTING INFRASTRUCTURE: This 10 Gigabit Ethernet bi-directional WDM SFP+ transceiver module sends and receives over a single strand of fiber optic cable instead of two TECHNICAL SPECS: 10GBASE-BX 10Gbps 10G Bi-Directional Downstream Single Mode (SMF)