Typically refers to input sockets that go to the head unit in a vehicle. The analog AUX jack enables any music player to play back through the vehicle's speakers, while the USB port allows music ...
When [Ivan] selects either the Aux input or wants to play MP3s from a thumb ... The end of a cassette tape plugs into the USB port. The rewind button plugs into the Aux jack.
Not that long ago, you’d need to pair via Bluetooth, find the right USB port, or even send audio through the car’s 3.5mm auxiliary input. But what if even the humble aux port isn’t an option?