>> I've also had a few random power supply issues where amazingly the computer could boot
>> up fine but the USB ports could not power anything simply because the PSU was
>> not supplying enough ampage.
>>
Had that same problem once, but with the additional symptom of the fans slowing down when the system was working hard.
Got a external hard drive that uses a 2.5" laptop drive, powered from USB and it works with laptops, just the machine mentioned above that couldn't power it.
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