What Does Auxiliary Port (AUX) Mean?
An auxiliary port (AUX) is a type of standard communications port on a device that accommodates audio signals for:
Techopedia Explains Auxiliary Port (AUX)
Here’s more on how this type of system worked on traditional PC platforms: the general design involved system resource configurations on a PC where engineering selected these for each port, i.e.: COM1, COM2, COM3, COM4, etc.
