What is the Sandstone QSFP-4X10G-AOC7M-ST?
The Sandstone QSFP-4X10G-AOC7M-ST is a QSFP optical transceiver module, listed by the manufacturer as "Cisco Compatible 40G QSFP+, 40GBASE-Active Optical Cable Breakout, 7m AOC MMF Breakout 4 x SFP+, DDM, C-Temp from Moduletek". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.