How to block USB port without software

This trick is very use full for your personal PC and laptop some other people 

and friends are entered pen drive in your PC and laptop, result your computer 

have entered viruses and thief your important data or file.

 Mathode:-1

1:- Windows+"pause/break" button OR Start à Run à “devmgmt.msc" 

      type without quote

2:-Select Hardware tab and choose Device Manager.

3:-Let's find "Universal Serial Bus Controller" When find these 

    right click on "Universal Serial Bus Controller" and choose "Disable"

 Mathode:-2

1:-Restart your system and enter “Delete..” button continue booting time.

2:- Open BIOS setup and choose USB controller and press “Enter” 

      button then select disable.

3:-Press “F10” function key and press “yes”.