What is the Sandstone SFP-10G-LR-S-20K-ST`?
The Sandstone SFP-10G-LR-S-20K-ST` is a SFP+ optical transceiver, listed by the manufacturer as "Cisco Compatible 10G SFP+, 10GBASE-LR, 1310 nm, 10km SMF LC, DDM, C-Temp, BLUE Latch, *Ethernet Only". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.