Topic summary
Dongles

Extracted from the Wikipedia article Dongle.
Other
- Cassette adapters enable cassette-radios to allow AUX in, as with iPod/MP3 player/smartphone/portable CD player.
- Personal FM transmitters allow content from a portable media player, portable CD player, smartphone, portable cassette player, or other portable audio system to be heard on an FM radio.
- IDE/PATA connectivity can be re-channeled with some dongles:
- Both floppy disk and hard disk drives have been emulated on solid-state "dongles" to ensure legacy recognition, allowing SD cards to serve software to old Commodore 64 and Apple II era computers.