The amazing device allows you to attach additional display to PC or laptop without annoying of taking your computer apart. You can effectively multiply working space through USB 2.0 port. Primary, Extended, Mirror and Rotation modes are available for your preference for productive job. SYSTEM REQUIREMENTS ?? Pentium 4 / Celeron Family, AMD K6 / Athlon / Duron Family. 1.0GHz or higher processor ?? Single Display Setup: 256MB RAM or higher; Multi-display Setup: 512MB RAM or higher (Higher memory recommended for optimal performance) ?? Available USB 2.0 port ?? Windows 2000 SP4 / Windows XP SP2 / Windows Vista NOTE ?? Unplug the USB 2.0 VGA ADAPTER before executing the setup or un-installation program. ?? AC power adapter is required for external USB Hub. Please be reminded that the driver allows up to 6 USB 2.0 VGA ADAPTERS on one PC. ?? DO NOT reboot the computer until all of USB 2.0 VGA ADAPTERS are installed.