40GBASE-LR4 2km Gen2 Lite QSFP+ Transceiver
https://www.epsglobal.com/Media-Library/EPSGlobal/Products/files/finisar/transceivers/FTL4C1QL2L.jpg?ext=.jpg&maxsidesize=400
XCVR, QSFP, 2km, 40GE Lite, 4x10G CWDM DFB, PIN, Limiting, XLPPI electrical interface, LC, ROHS, 3.3V, 3.5W, Limited Temp, 15/70°C operation, Gen2
FTL4C1QL1L
FTL4C1QL1L
Coherent
https://www.epsglobal.com/getmetafile/94cfad1c-656d-435e-8625-94600a97706c/Coherent