What is the Sandstone QSFPP-40GBASE-SR4-ST?
The Sandstone QSFPP-40GBASE-SR4-ST is a QSFP optical transceiver module, listed by the manufacturer as "Juniper Compatible 40G QSFP +, 40GBASE-SR4, 850 nm, 100m MMF MPO12, DDM, C-Temp, BLUE Latc". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.