SIIG's USB 3.0 to DVI/VGA Pro enables you to add a DVI or VGA port to your notebook or desktop computer through a USB 3.0 port. It allows you to connect a DVI or VGA display to your system for optimal video configuration. This adapter supports SuperSpeed 5Gb/s data rate to deliver smooth, high resolution and high bandwidth videos/images. In addition, it offers multiple display modes including primary, extended, and mirror to improve your system's video capability. And it is powered by USB bus, no power adapter is required. It is a cost-effective adapter to add an additional DVI or VGA display to your computer.