Some motherboard BIOS's allow you to specify how many USB ports you want enabled
go to your Control Panel, System, Device Manager.
go down to where it says Universal Serial Bus Controllers, click the + sign,
you will see a list of devices, probably something like this
via rev5 usb host controller
via rev5 usb host controller
usb printing support
usb mass storage controller
usb root hub
usb root hub
right click on the ones that say via or intel or SIS, or ALI, or Standard open host controller, and choose uninstall.
you will be asked if your sure, and you will see some of the USB root hubs disappear.
If you are asked to restart, choose no, and remove the other
via/sis/intel/etc open host controller (s) from your system, when they
have all been removed restart your computer.
when the computer restarts, it will detect the USB controller and connected devices, reinstall the drivers/software
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