What is the Sandstone 160-9115-900-ST?
The Sandstone 160-9115-900-ST is a CFP optical transceiver, listed by the manufacturer as "Ciena® 160-9115-900 Compatible TAA 100GBase-ER4 CFP Transceiver (SMF, 1310nm, 40km, LC, DOM)". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.