when pluging in your mp3 it often comes up it says usb not working or mp3 well it not true most usb power is 1.0 your mp3, cameras,psp. or any thing tat needs to be put into the com usb. my advice to solve this problem is to bye a usb hubb with it own power sorce or by a internal usb port with 2.0 .if not sure what your looking for go to any com shop and they should help you.