What is the Sandstone SFP-10G-T-ST?
The Sandstone SFP-10G-T-ST is a SFP+ optical transceiver, listed by the manufacturer as "Cisco Compatible 10GBASE-T SFP+ Copper 30m RJ-45 Transceiver Module". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.