What is the Sandstone QSFP-100G-LR4-AR-ST?
The Sandstone QSFP-100G-LR4-AR-ST is a QSFP optical transceiver module, listed by the manufacturer as "100GBASE-LR4 QSFP100 Transceiver 10km Duplex SMF LC Arista Compatible". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.