What is the Ciena OPT-16D-U?
The Ciena OPT-16D-U is a network/telecom equipment component, listed by the manufacturer as "OPTIC". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
CircularTelecomParts Catalogue

Part Number
Part Overview
The OPT-16D-U is a network/telecom equipment component manufactured by Ciena. Listed by the manufacturer as "OPTIC", it is available through Circular Telecom's surplus and refurbished network equipment marketplace as a sustainable, tested alternative to buying new.
Common Questions
The Ciena OPT-16D-U is a network/telecom equipment component, listed by the manufacturer as "OPTIC". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
Circular Telecom sources and resells surplus and refurbished Ciena network equipment, including parts such as the OPT-16D-U, subject to current availability. Contact Circular Telecom for a live quote.
Circular Telecom Catalogue