What is the Sandstone SFP-GE-Z-ST?
The Sandstone SFP-GE-Z-ST is a SFP optical transceiver module, listed by the manufacturer as "Cisco Compatible 1G SFP, 1000BASE-ZX, 1550 nm, 80km SMF LC, DDM, E-Temp, GREEN Latch". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.