USB 2.0 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 1920x1200) 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 1920x1200. this USB-VGA video adapter is the ideal solut