Richard Miller <[email protected]> wrote:

> > I happen to have a chance to test this on another machine, which
> > has ps/2 interface on board.   Dell's has no ps/2 interface.
> > 
> > The machine having ps/2 interface DOES boot with usb kb/mouse
> > without ps/2 kb/mouse attached.
>
> Some motherboards (I don't know about Dell) have a special setting
> to enable different mouse protocols at boot time.  Look for
> something like "usb legacy support".

I have also seen this affect USB keyboards (on Linux). Enabling it helped.

HTH,

Arnold

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