What is the Sandstone 160-9402-900-I-ST?
The Sandstone 160-9402-900-I-ST is a QSFP optical transceiver module, listed by the manufacturer as "Ciena Compatible 100G,QSFP28 100GBASE-LR4/OTU4 1310NM, SM, 10K, I-Temp". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.