Hi,
Would be better if sound to be effected on detection of unknown device. If the menu is available please let me know where it is?
Normally minimized window, with the known devices will be in the background, once you enable start with windows. But on finding of unknown device if a peculiar music file is launched or windows sound is selected, then it should be heard, alerting whoever using the computer to check, whether it is trustworthy device or suspicious device.