What is the Sandstone GP-SFP2-1F-ST?
The Sandstone GP-SFP2-1F-ST is a SFP optical transceiver module, listed by the manufacturer as "100BASE-FX SFP Transceiver 2km 1310nm 155M/OC3 MMF Duplex LC. DELL COMPATIBLE". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.