Aux Cable

An Aux Cable port (AUX) is the logical name for a standard communications port. AUX is an asynchronous serial port with an interface that allows the auxiliary input of audio signals. It is an interface that permits a PC or other device to transmit or receive data one bit at a time. Generally, the AUX port on a PC is computer port 1 (COM1), which is the first serial port with a preconfigured assignment for serial devices.

The Aux Cable port is typically used for audio equipment that receives peripheral sound sources, such as digital music players or audio speakers. The peripheral sound device is connected to an AUX port or other medium such as a vehicle’s audio jack. Although most systems have an AUX port, some older models do not. Nonetheless, there are adapters available that allow a sound device to work through an older system.