What is the Cisco QDD-2X100-LR4-S?
The Cisco QDD-2X100-LR4-S is a QSFP optical transceiver module, listed by the manufacturer as "QSFP-DD TRANSCEIVER, 2X 100GBASE-LR4, 2X DUPLEX CS, 10KM SMF". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
