Extending your desktop has never been easier with the Port Authority 2 USB (Universal Serial Bus) 2.0 to XGA Adapter! You can easily expand spreadsheets over two monitors, read e-mail on one monitor & view the attachment on the other, make multi-screen presentations without a second computer, or expand your graphics workstation. The USB (Universal Serial Bus) 2.0 to XGA Adapter is perfect for laptop users who dont have the capability of adding an extra video card. It is also a cost-effective solution for desktop users who dont want the hassles of installing an internal video card. USB (Universal Serial Bus) 2.0 technology means that you can use this device with numerous computers versus an internal card that can only be used with one. Since this adapter is bus-powered, no additional power cables are needed. Whether you want to use the Port Authority 2 USB (Universal Serial Bus) 2.0 to XGA Adapter with your laptop or with your desktop, youll enjoy the ease of use & quality of picture this device delivers.