What is the Sandstone 1AB392040001-ST?
The Sandstone 1AB392040001-ST is a QSFP optical transceiver module, listed by the manufacturer as "Alcatel Compatible 40G QSFP+, 40GBASE-SR4, 850 nm, 100m MMF LC, DDM, C-Temp". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.