What is the Champion1 100GQSFP28E-LR4?
The Champion1 100GQSFP28E-LR4 is a QSFP optical transceiver module, listed by the manufacturer as "100G QSFP28 Single-Rate 100GBase-LR4 10km SMF LC/UPC connector". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.