AddOn - accessories USB 3.0 to VGA multi monitor adapter/external video card connects an available USB 3.0 port to a VGA display, supporting high resolution video. It is a convenient external video solution that makes it easy to add multi-monitor/dual display capability to a USB 3.0-enabled desktop or laptop computer. Using the high-bandwidth SuperSpeed USB 3.0 interface, the adapter functions as an external graphics card to deliver smooth, high-resolution content to your VGA display the adapter can be used to mirror your primary desktop, showing the same image on each display, or to extend your desktop to double your workspace and increase your productivity. It is reverse compatible with USB 2.0.