Tripp Lite USB 2.0 to DVI/VGA Dual/Multi-Monitor External Video Graphics Card Adapter, 128 MB SDRAM, 1080p (U244-001-R) Connect a DVI or VGA monitor or projector to the USB 2.0 port of your computer or laptop to extend video to a second display or duplicate one video on both Add up to 6 adapters to connect a total of 7 displays Supports HD video resolutions up to 1920 x 1080 (1080p) @ 60hz Compatible with Windows 10 and Mac 10.11 computers. Also compatible with Ubuntu 14.04.2 1-Year Limited Warranty