SIIG's USB 3.0 to HDMI/DVI Dual Display Adapter allows you to add one HDMI and one DVI port simultaneously to your Windows or Mac computers through a USB (3.0) port. It supports triple display modes including Primary, Mirror and Extended to enable a wide variety of applications, great for presentation or entertainment. SuperSpeed USB 3.0 5Gbps data transfer rate and full HD resolution are supported to smoothly deliver high-resolution crystal clear images/videos. It is quick and easy to setup with no external power adapter required. This high performance dual display adapter greatly expands and enhances your computer's display capability for a much improved efficient and productive system.