Tis is designed to work with Amithlon and UAE/Amiga Forever first and foremost. By changing the ROM on the card it can be made to work with other systems.
Hence on a classic Amiga or an Amigaone.
We should have some more information later this week. When DFx is not in use the drive will function as it did prior to attachment of DFx, passing everything through as before. I hope this helps shed some light on its operation.