Add a secondary vga display to your usb 30 enabled pc and install the drivers without a cd or internet connection this usb 30 to vga video adapter works as an external video card enabling the usb port on your computer to output video to a vga display at high resolution the adapter also features on board driver installation which means the adapter will work when you connect it even without a software disc or internet connection for the ultimate in hassle free installation this usb video