StarTech.com USB VGA External Dual or Multi Monitor Video Adapter USB2VGA Compact, USB-powered adapter provides the easiest way add a secondary or additional display to your PC Completely external device saves the time and hassle of having to install a specialized or secondary video card to add multiple displays The ability to use multiple adapters (up to five) provides a scalable display configuration for future expansion USB-powered - no external power adapter required Lightweight, compact design Easy installation Supports display resolutions of up to 1600x1200 Optimal performance at 1280x1024 and ideal for use with 17" to 19" monitors