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<< bearauto, If your end-device(s) draw the power from USB (i.e. external USB CD/DVD-ROMs for notebooks), then "Yes". Most of printers/scanners have their own P/S, so "No" in this case. Hope that helps. >>
What about my wireless mouse? >>
I think what he was trying to say is that your devices that have their own power source will be fine. My experience has been that wireless mice run on batteries in the actual mouse - is that the case here? If so, that part is fine. If the receiver also needs power and does not have its own external AC power source (ie an AC adapter that plugs into the wall), then you will need a powered hub (meaning one that plugs into the wall as well as your computer). Make sense?