What is the Cisco QSFP-4X10G-LR-S?
The Cisco QSFP-4X10G-LR-S is a QSFP optical transceiver module, listed by the manufacturer as "QSFP 4x10G Transceiver Module,SM MPO, 10KM, Enterprise-Class". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
