The Comprehensive USB3-HDGA USB 3.0 graphic adapter allows you to easily connect extra monitors to your laptop or desktop without having and extra graphic card. This device takes a USB signal and converts it to a HDMI output to overcome any display limitation on your computer. This USB 3.0 graphics adapter connects external HD TV or monitor with computer via USB 3.0 port, supporting mirror and extend mode. It complies with USB regulation, USB powered, plug and play. This product is becoming the main trend for speedy multi display. You could work and watch a movie at one time, thus it meets two or more people request by two or more display. More important, this device supports hot plugging, so you could remove extra monitors at any time without restarting the PC. Unit comes with a HDMI to DVI adapter. Unit is covered by our 2 year warranty.