For security reason we would need to disable the boot from USB from BIOS but from what i have understood in modern bios is not possible. In the BIOS of our XPS 8910 i didn't find any option to do it, and you can do very few things compared old bios where you could set a lot of options (enable/disable wifi, usb, boot from usb.......) Is there a way to do it or do I have to give up? Just to understand could you tell me which is the difference between Admin Password, System Password and HDD Password? Tanks a lot