What is the Fs Com QSFP28-SR4-100G?
The Fs Com QSFP28-SR4-100G is a QSFP optical transceiver module, listed by the manufacturer as "100GBASE-SR4 QSFP28 850nm 100m DOM Transceiver Module". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.