What is the Sandstone CFP-100G-LR4-ST?
The Sandstone CFP-100G-LR4-ST is a CFP optical transceiver, listed by the manufacturer as "Cisco Compatible 100G CFP, 100GBASE-LR4, 1310 nm, 10km SMF LC, DDM, C-Temp, BLUE Latch, **Please Note Cisco Original Part has SC Connector**". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.