What is the Sandstone TRC5E20FNF-LF000-ST?
The Sandstone TRC5E20FNF-LF000-ST is a CFP optical transceiver, listed by the manufacturer as "MSA Compatible Multi-Rate CFP, 100GBASE-LR4/OTU4, 1310 nm, 10km SMF LC, DDM, C-Temp". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.