“The TRITTON See2 USB 2.0 SVGA Adapter enables you to connect any monitor, LCD or projector to your PC or notebook using a USB 2.0 port. Simply plug into a USB 2.0 port and extended your desktop or use it as a second display from your main screen. By using USB 2.0 technology, there is no need to open the computer or struggle with compatibility issues related to a second VGA card.”
http://www.trittontechnologies.com/products/TRIUV100.htm