Originally Posted by kaka
i wanna do it the way you said but how do i disable the on board usb
The best way to disable the onboard is through the BIOS...
Have you ever been into your computers BIOS before?
If not then when you first switch on your machine constantly tap your DEL key and it should load your BIOS. (it will either be DEL, F1, F2 or F10)
Once in the BIOS try to locate "Integrated Peripherals" and within that menu you should be Onboard USB or just USB. Disable it and then save changes and exit.