AddOn - SFP+ transceiver module (equivalent to: Cisco ONS-SC+-10G-54.9) - 10 GigE - 10GBase-DWDM - LC single-mode - up to 49.7 miles - channel: 28 - 1554.94 nm - TAA Compliant - for P/N: 15454-10GE-XP-WS/ 15454-ADM-10G-RF/ 15454-ADM-10G-WS/ 15454-GE-XPE/