Re: Installing 2 usb..scanners (hp&canon) on p4 system.

From: Bob I (birelan_at_yahoo.com)
Date: 11/22/04 

Date: Mon, 22 Nov 2004 10:46:43 -0600

That is because of the following:

This behavior occurs because the Usbscan.sys driver cannot be used
simultaneously by more than one scanner.

Using a different scanner that doesn't use Usbscan.sys will allow 2
scanners to be used. But since you are searching for problem resolution
then "Cannot" is the operative word.

Bill Sharpe wrote:

> Interesting!
> I had two scanners, one Canon flatbed, one PrimeFilm for 35mm slides,
> installed on my HP running XP Pro. Both were connected to USB ports. I
> never turned on both of them at the same time, but each one worked if I
> turned it on.
>
> I have just installed an HP all-in-one, which is usually turned on all
> the time. I have not yet checked to see whether the two scanners
> conflict, although I do not see a problem with turning off the
> all-in-one when I want to scan a slide, if necessary.
>
> I note the KB article states "may not" rather than "cannot" in the
> symptoms section.
>
> Bill
>
> "Carey Frisch [MVP]" <cnfrisch@nospamgmail.com> wrote in message
> news:uU87AlwzEHA.2676@TK2MSFTNGP12.phx.gbl...
> You Cannot Simultaneously Use Multiple USB Scanners in Windows XP
> http://support.microsoft.com/default.aspx?scid=kb;en-us;324756
>
>