MuchBuy New USB 3.0 to VGA Video Graphic Card Display External Cable Adapter for Win 7/8 The USB 3.0-VGA Display Adapter enables you to connect additional display devices(CRT/ LCD monitor, projector) to your desktop or notebook PC. The connected monitor can be configured to either clone your primary screen, or extend the Windows desktop allowing visibility of more applications at the same time. The USB 3.0 Graphic Adapter driver used to control the extra screen uses very little computer resource and offers a vast array of screen resolutions and color depths. The flexibility of the common USB 3.0 technology avoid the need to open the computer or struggling with compatibility issues related to the VGA card This ensures that there is little difference in performance between a directly connected screen and a screen connected through the USB 3.0 graphic adapter.