We have disabled USB drives using USB disable Script in Kbox, However we are surprised to see that some users are using USB without any problem.
We have further investigated it and found that, If we disable the USB it disable only one type of USB driver, say [Kingston. ]. So when user inserts another type of USB stick , it installs new driver and change the registry Key from  [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\UsbStor] , Start = 4  to Start =3 thus enables all types of USBs.

Any help will be highly appreciated

Regards,