The USB2DVIE3 USB DVI Video Adapter offers a perfect external multi-monitor solution, enabling you to add a high-resolution (up to 1920x1200) external DVI output to your desktop or laptop computer system using an available USB 2.0 port. A cost-effective solution for systems that lack the outputs required for a multi-monitor setup, this high-performance USB to DVI adapter can be used to mirror your primary display and show the same image on both screens, or extend your desktop to double your workspace. This small form factor USB video adapter can be used with up to 4 additional (5 total) USB2DVIE3 USB video adapters, creating multiple DVI connections to add additional displays quickly and easily - all without having to open the computer case to add extra video cards. Backed by a StarTech.com 2-year warranty and free lifetime technical support.