Quote:
Originally Posted by marc hildebrant
Per the USB 2.0 spec, the max current available is 500 mA per device. However, many devices like disc drives, draw more than 500 mA. These devices count on the fact that for say 4 USB outlets, the total from the computer is 2.0 A, and they assume that they can take the total allowed themselves.
The spec. only allows, though, 500 mA.
For the USB 3.0 spec., I lobbyed for more current and got the max to 800 mA per device.
Marc
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Marc,
Arn't devices supposed to request current before it is delivered? From a PC that is.
A few years back I blew out a motherboard from plugging in too many devices and was surprised as I thought it wasn't supposed to be possible.