Aux

Aux is short for "auxiliary" and refers to a type of audio input and output commonly found on electronic devices such as smartphones, computers, and car stereos. The aux port is a small headphone jack that allows you to connect an external audio source, such as an MP3 player or phone, to your device's speakers or headphones.

An aux cable is a cable that has a male connector on each end and is used to connect the aux port of one device to the aux port of another device. The cable is typically used to play music or other audio content from a portable device through a car stereo, speaker system, or headphones.