What is the Gigatech QSFP-100G-LR4-S-GT?
The Gigatech QSFP-100G-LR4-S-GT is a QSFP optical transceiver module, listed by the manufacturer as "100GBASE-LR4 QSFP Transceiver LC 10km Cisco Compatible". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.