What is the Ciena 186-3112-901?
The Ciena 186-3112-901 is a QSFP optical transceiver module, listed by the manufacturer as "WAVESERVER WL5E 2X800G L-BAND ENHANCED 16XQSFP28/QSFP-DD MODULE". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
