Symptoms: Sometimes the operating system will “disable” the device due for various reasons. This will cause the dongle to show up as “Not Connected” in the interface:
Suggested solution:
Windows (re-enable in Device Manager):
https://www.lifewire.com/how-to-fix-code-22-errors-2619234
Mac (SMC reset):
http://osxdaily.com/2015/08/09/mac-usb-ports-not-working-fix/