I found out that I can get it to work if I leave at least one other
USB device *not* connected to the computer.
As soon as I connect that printer, I get an 'unknown device' error on
the printer.

On Feb 7, 10:54*pm, Karl Snooks <KarlSno...@discussions.microsoft.com>
wrote:
> allanc,
> The 4-port usb hub on your monitor-does the hub itself receive power from
> your computer or from the usb port on your computer? *Here I'm speaking only
> of power for the hub itself and not for the monitor.
>
> Try, using Device Manager, disabling all usb ports except for the one
> feeding the monitor. *If that works, then reenable other usb ports on your
> computer one at a time.
>
> karl
>
>
>
> "allanc" wrote:
> > I am not sure what you are asking me.
> > You mean the monitor?
>
> > On Feb 7, 10:03 pm, Karl Snooks <KarlSno...@discussions.microsoft.com>
> > wrote:
> > > Allanc,
> > > Your laptop has a limit on how much power it can supply to USB ports and
> > > there is a limit on the number of root usb hubs. *Does your new hardware have
> > > its own supply for the USB ports which it supplies?
> > > Karl
>
> > > "allanc" wrote:
> > > > I have a 5 year old desktop (XP PRO sp2) with 6 USB ports in total (4
> > > > in back, 2 in front).
> > > > The 4 in back are 2.0 but I am not sure of those in front.
>
> > > > I have not had a USB issue until recently when I changed my monitor to
> > > > one with 4 built-in USB ports.
> > > > I installed the monitor and software according to the directions.
> > > > I connected the USB cable to the back of the computer.
> > > > However, everytime the cable is connected, I am getting errors such as
> > > > 'USB device not recognized'.
> > > > The device manager also shows unknown devices.
> > > > I delete the unknown devices and then try connecting the cable in a
> > > > different order such as before/after monitor is powered up, before/
> > > > after computer is powered up, etc.
> > > > I have also disconnected the power cable to the computer (a suggestion
> > > > from a computer help forum).
>
> > > > The USB cable from monitor to computer is now disconnected.
> > > > All USB devices that were connected at the time the monitor was
> > > > installed function OK (such as keyboard, mouse, printer).
> > > > However, a USB stick that I have used many times now displays an error
> > > > 'USB device not recognized' whenever I connect it.
> > > > I have tried updating the USB driver but a message similiar to 'You
> > > > are already using the current driver' is displayed.
>
> > > > All suggestions are appreciated.
>
> > > > Thank you in advance.- Hide quoted text -
>
> > > - Show quoted text -- Hide quoted text -
>
> - Show quoted text -