Image of another revision of X-Copy dongle
The X-Copy dongle is connects to the Amiga's floppy drive port and have an external floppy drive connected to it. The X-Copy software and dongle was designed to allow you to copy many non-standard DOS disks, but in particular they made use of various tricks to allow you to copy protected software.
Thanks to D. Kraus, Michael Dittmar and Daniel Kraus