What is the Sandstone 3HE16558AA-ST?
The Sandstone 3HE16558AA-ST is a QSFP optical transceiver module, listed by the manufacturer as "Alcatel-Lucent Compatible 100G QSFP28, 100GBASE-ZR4, 1310 nm, 80km SMF LC, DDM, C-Temp, WHITE Latch". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.