What is the Sandstone V50017-U744-K500-ST?
The Sandstone V50017-U744-K500-ST is a CFP optical transceiver, listed by the manufacturer as "Coriant Compatible 100G CFP, 100GBASE-ER4/OTU4, 1310 nm, 40km SMF LC, DDM, C-Temp". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.