What is the Sandstone 280-0350?
The Sandstone 280-0350 is a SFP+ optical transceiver, listed by the manufacturer as "Cyan Compatible 10G SFP+, 10GBASE-BX-U, TX1270/RX1330 nm, 10km SMF LC, DDM, C-Temp". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.