Re: Canoscan Lide 210 Scanner

[Johann Spies <johann.spies@gmail.com>]

On 30 October 2014 10:56, Joe <joe@jretrading.com> wrote:

On Thu, 30 Oct 2014 09:16:42 +0200
Johann Spies <johann.spies@gmail.com> wrote:

It is astronomically unlikely that the USB supply voltage would be too
high, as almost certainly, the same supply is used inside the computer,
and a 5 Volt rail can't go any higher than 5.25 before other things
will stop working.

Not the volt but the current maybe.  According to this website(http://www.extremetech.com/computing/115251-how-usb-charging-works-or-how-to-avoid-blowing-up-your-smartphone) the current on USB2 can be up to 500mA (0.5A) while in the case of USB3 it is 900mA (0.9A).

Regards
Johann

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