Tripp Lite's U244-001-VGA-R, USB to VGA Display Adapter, enables you to connect an additional monitor or projector to a computer/laptop USB 2.0 port. Up to six U244-001-VGA-R adapters can be used simultaneously, allowing the user to connect up to six additional monitors to a single computer. Once the installation is done, the computer screen appears on the add-on monitor(s) without the hassle of function keys to swap to a second monitor. The U244-001-VGA-R chip-set supports video resolutions up to 1920 x 1080 (60Hz), 1080p (60Hz). The U244-001-VGA-R is compatible with Windows 2000 and later, and Mac OS X 10.4 and later operating systems. 1 year limited warranty.