The USB2VGAPRO2 USB to VGA 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-VGA Adapter delivers high quality video (up to 1920×1200) for a variety of applications and is capable of simultaneously running up to five additional displays from a single computer (using four USB2VGAPRO2 External Video Adapters). The adapter connects to a host computer through a USB 2.0 port, acting as an external VGA 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 1920×1200, this USB-VGA video adapter is the ideal solution for a wide range of operating environments as well as large-screen displays/monitors. Quick and easy installation USB-Powered operation, no external power adapter required Support for Aero themes in Windows? Works with Mac? OS X Connect up to five adapters to one PC for a true extended desktop experience Powered by DisplayLink DL-195 chip Optimal performance at 1920×1200 and ideal for use with 24″ to 26″ monitors or smaller.