What is the Sandstone ETGBE-ST?
The Sandstone ETGBE-ST is a SFP optical transceiver module, listed by the manufacturer as "ECI Compatible Multi-Rate SFP, 1000BASE-T, 100m COPPER RJ45, NO DDM, I-Temp, 88h, RXLOS=DIS, TXDIS=DIS". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.