An auxiliary port is a special socket that allows you to connect external devices like speakers, headphones, or other audio equipment to another device such as a phone, computer, or car stereo. Full definition
It's also possible to plug a compatible speaker into the Dot via the device's 3.5 mm auxiliary port. (mobilesyrup.com)
Cars are very difficult (and expensive) to upgrade, and if you have one released before auxiliary ports and Bluetooth became standard, listening to music can be a pain. (businessinsider.com)
Bluetooth Connection for media Auxiliary port for media Media controls on steering wheel Fuel efficient Durable fabric seats, forgiving to pet messes USB port for charging phones / tablets Extra spacious center console depth (autolist.com)