Cisco USED 15216-DCU-350 Ons 15216 Dispersion Compensator UnitBRAND: CISCO MODEL: 15216 DCU 350 Ons 15216 Dispersion Compensator Unit COLOR: GREEN CONDITION: USED Used: An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the sellers listing for full details and description of any imperfections. R2V3 Functionality and Cosmetic rating is F3 C4 for this