I had exactly the same problem.
Ended up using a different USB port on the computer and everything worked fine.
Originally I was trying to use one of the USB ports that remains powered even when the computer sleeps - and the same on my notebook dock. Neither of them worked, but then I swapped to a different regular USB port, and all worked as it should.
Ended up using a different USB port on the computer and everything worked fine.
Originally I was trying to use one of the USB ports that remains powered even when the computer sleeps - and the same on my notebook dock. Neither of them worked, but then I swapped to a different regular USB port, and all worked as it should.