USB 2. External Video & Graphics Card | Multi-Monitor | USB-Powered | Supports Mac & Windows® 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 192x12) 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. 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 192x12, this USB-VGA video adapter is the ideal solution for a wide rade of operating environments as well as large-screen displays/monitors. The USB2VGAPRO2 USB to VGA Adapter is backed by a StarTech.com 2-year warranty and free lifetime technical support. The StarTech.com Advantage * Optimal performance at 192x12 and ideal for use with 24" to 26" monitors or smaller * 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 * USB-Powered operation, no external power adapter required * Quick and easy installation * Powered by DisplayLink DL-195 chip