What is the Sandstone QSFP-100G-LR4-S-NOK-ST?
The Sandstone QSFP-100G-LR4-S-NOK-ST is a QSFP optical transceiver module, listed by the manufacturer as "Cisco-NOKIA Compatible 100G QSFP28, 100GBASE-LR4/D, 1310 nm, 10km SMF LC, DDM, C-Temp, BLUE Latch, Single Rate Version/DFB TOSA". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.