Thread: IO error started to happen
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Old 10-27-2019, 06:04 AM   #12
theducks
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Quote:
Originally Posted by stumped View Post
i have had issues with USB drives in unpowered Dell PC front hubs: frequent IO fails which go away as soon as I use a powered drive. some ports must be right at the minimum limit of what USB spec dictates and simply cannot power a drive properly for data flow. but those same ports are ok for low power stuff like a keyboard or game controller
Technically speaking: ALL USB ports ARE powered. (Pins 1 and 4)

Depending on the USB version #, the power available differed.
USB 1.0 was for low powered devices (mice,keyboard,joy stick)
USB 2.x is supposed to be 500 mA.

Crummy designs or poor craftsmanship probably accounts for why Front Ports fail to meet 'spec'. (When the founder was there, Dells were solid. Then... they got cheap , not even a spare Molex plug at the drive bay. )
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