What is the Sandstone SFP-H25G-CU5M-ST?
The Sandstone SFP-H25G-CU5M-ST is a SFP optical transceiver module, listed by the manufacturer as "Cisco Compatible 25G SFP28, 25GBASE-DAC, 5m 30AWG SFP28, DDM, C-Temp, BLACK Latch, Direct Attached Cable Assembly". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.