DWDM-X2-55.75 - Cisco - 10Gbps 10GBase-DWDM Single-Mode Fiber 80km 1555.75nm Duplex SC Connector X2 Transceiver Module DWDM-X2-55.75 - Cisco - 10Gbps 10GBase-DWDM Single-Mode Fiber 80km 1555.75nm Duplex SC Connector X2 Transceiver Module $2,202.32 $1,866.37