What is the Sandstone 34100052-ST?
The Sandstone 34100052-ST is a SFP optical transceiver module, listed by the manufacturer as "Huawei Compatible 1G SFP, 1000BASE-T, 100m COPPER RJ45, NO DDM, C-Temp, GOLD Latch, 88h, RXLOS=DIS, TXDIS=DIS". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.