What is the Sandstone E25GSFP28SR-ST?
The Sandstone E25GSFP28SR-ST is a SFP optical transceiver module, listed by the manufacturer as "Intel Compatible 25G SFP28, 25GBASE-eSR, 850 nm, 300m MMF LC, DDM, C-Temp, BEIGE Latch". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.