How to enable/disable USB port via Registry

Open run and type regedit then Enter
Go to :
HKEY LOCAL MACHINE  >  SYSTEM  >  CURRENT CONTROL SET  >  SERVICES  >  USBSTOR

On the right pane, right-click Start and select Modify



Set 3 as enable (Hexadecimal)
Set 4 as disable (Hexadecimal)