What is the purpose of the AUX port in an Audi 80?

I recently purchased an Audi 80 and noticed it has an AUX port. I'm not sure what its function is or how to use it. Can someone explain its purpose and how to utilize it?

The AUX port in an Audi 80 is used to connect external audio devices such as a phone or MP3 player to the car's sound system. It allows you to play music or other audio directly from your device through the car speakers.

To use the AUX port, you will need to connect a 3.5mm audio cable from your device to the port. You can then switch to the AUX mode on your car's audio system for playback.