What is the Sandstone SFP-10G-SR-S-ST?
The Sandstone SFP-10G-SR-S-ST is a SFP+ optical transceiver, listed by the manufacturer as "Cisco Compatible 10G SFP+, 10GBASE-SR, 850 nm, 300m MMF LC, DDM, C-Temp". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.