AddOn Cisco DWDM-X2-56.55 Compatible TAA Compliant 10GBase-DWDM 100GHz X2 Transceiver (SMF, 1556.55nm, 80km, SC) – 100% compatible and guaranteed to work DWDM-X2-56.55-AO

AddOn SFP56 Module – For Optical Network, Data Networking – 1 x LC 50GBase-LR Network – Optical Fiber – Single-mode – 50 Gigabit Ethernet, 25 Gigabit Ethernet, 10 Gigabit Ethernet – 50GBase-LR – TAA Compliant SFPM-50GBASE-LR-I-AO