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- Michael Schudel
April 25, 2009, 10:09 am
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I have the following problem that my Win XP SP2 PC tells me that USB-Hub's
voltage is above standard and I should deaktivate it. The result of this
problem is that that my USB mouse doesn't work anymore except I restart the
PC and then it works until the same problems occurs again.
PS: On this USB-Hub (passive internal one) I've plugged a scanner with 500
mA use and my mouse with 100 mA = 600 mA, but the Hub only provides 500 mA.
It has worked this way for about 2 years without a problem.
What's the cause of this problem and what I can I do to solve it?
I am grateful for all possible explaination and ways to solve it.
Have a nice day!
Re: Problem with USB-Hub: USB-Hub voltage above standard. Please deaktivate USB-Hub
On Sat, 25 Apr 2009 12:09:50 +0200, "Michael Schudel"
That's very unlikely. Windows may complain that a device is
pulling to much current from an USB port. I even doubt if there
is an (internal) way for the OS to measure the USB voltage,
Yet an aging scanner may increase it's current consumption.
There are several work arounds:
- USB duplo cord. (A cable with 2 flat plugs on one side; draws
power from 2 USB ports together)
- External active hub (An external hub that comes with it's own
- Replace the scanner (as an increase in current demand is
indicative of end-of-life)
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