Connect a DVI display for an extended desktop multi-monitor USB solution - The USB2DVIPRO2 USB to DVI Adapter functions as an external graphics card for Windows and Mac computers - the perfect solution for turning your desktop or laptop computer into a dual or multi-monitor environment, all through the simplicity and convenience of USB. The USB-DVI Adapter delivers high quality video (up to 1920x1200) for a variety of applications and is capable of simultaneously running up to five additional displays from a single computer (using four USB2DVIPRO2 External Video Adapters). The adapter connects to a host computer through a USB 2.0 port, acting as an external DVI video card to either extend or mirror the desktop shown on the existing display - without having to open the computer case. Featuring driver support for Microsoft Windows (including Aero themes) and Mac OS X, and with video support for resolutions up to 1920x1200, this USB-DVI video adapter is the ideal solution for a wide rade of operating environments as well as large-screen displays/monitors. The USB2DVIPRO2 USB to DVI Adapter is backed by a StarTech.com 2-year warranty and free lifetime technical support.