What is AUX?
3 Answers
AUX (Auxiliary) refers to an audio input interface. It can output audio from electronic audio devices including MP3 players (typically via a standard 3.5mm headphone jack), with the purpose of connecting to a car audio system to play music from these devices. The basic working principle of an AUX interface is that after connecting to it, audio from electronic devices can be transmitted through the headphone jack and AUX interface to the car audio system, allowing the audio to be played through the car's audio broadcasting facilities. AUX is the abbreviation for Auxiliary, which is an additional signal line design. On general audio equipment, besides the standard output and input terminals, there are often several terminals labeled AUX, serving as backup connection points. When there are special applications, such as requiring additional audio output or input, these terminals can be utilized. These backup terminals or lines, regardless of being input or output, are collectively referred to as AUX. Function: The AUX port is an asynchronous port, mainly used for remote configuration, dial-up connections, or connecting with a MODEM via a transceiver. It supports hardware flow control. The AUX port is usually placed alongside the CONSOLE port because they serve different configuration environments. The AUX interface establishes a command-line connection between the user and the device, enabling operations that are typically impossible in user mode, such as initialization, restoring default configurations, or correcting abnormal user modes. It provides a fixed port for the device, which can be used as a standard asynchronous serial port with a maximum speed of 115200bit/s. Using the AUX interface, remote configuration of hardware products, line backup, and other functions can be achieved. Note: When using the AUX interface, ensure you purchase the correct connecting cable and avoid plugging the audio cable into the wrong port. It's best to follow the steps outlined in the product's user manual when using the AUX interface. If unsure, consult the product's official website or call for assistance.
I use the AUX interface to listen to music every day when driving to work. It's just a small audio input jack in the center of the car, usually connected to a phone or MP3 player with a standard cable. Playing my own playlist is much more fun than listening to the radio, especially for stress relief during traffic jams. Although Bluetooth is popular now, AUX is simpler and more stable—just plug it in and it plays, no pairing or worrying about signal interruptions. It's recommended to prepare a power bank for your device before getting in the car. Some cars have the AUX port hidden, but most are near the armrest. Avoid using low-quality cables to prevent noise from affecting the sound quality. Occasionally clean the dust during maintenance. In short, it's an essential little helper for car life, making the journey more enjoyable.
As a family user with over a decade of driving experience, I consider AUX to be very important. That audio input port in the car allows the car stereo to play audio from external devices, such as connecting a tablet to play stories for kids during long trips, keeping boredom at bay. The operation is super straightforward: buy a suitable audio cable, plug one end into the car and the other into your device, then switch the stereo to AUX mode. From a safety perspective, it's more stable than operating a touchscreen, allowing you to focus on the road. Although not as convenient as wireless, it's reliable and practical—supporting older cars or models without Bluetooth. Remember not to set the device volume too high to prevent distortion and damage to the speakers.
