400GBASE-DR4 OSFP Transceiver
https://www.epsglobal.com/Media-Library/EPSGlobal/Products/files/finisar/transceivers/FTCD4525E2PxM.jpg?ext=.jpg&maxsidesize=400
FTCD4525E2PxM DR4 OSFP transceiver modules are designed for use in 400 Gigabit Ethernet links on up to 500m of single mode fiber
FTCD4525E2PxM
FTCD4525E2PxM
Coherent
https://www.epsglobal.com/getmetafile/94cfad1c-656d-435e-8625-94600a97706c/Coherent