Tripp Lite USB 3.0 SuperSpeed to DisplayPort Dual Monitor External Video Graphics Card Adapter 1080p - 512 MB SDRAM - 2560x1600,1080p"

Up to six adapters can be added to one computer Features 512MB DDR2 SDRAM of memory Add an additional DisplayPort monitor through a single USB 3.0 port Windows and Intel Mac compatible Compatible with Ubuntu 14.04.2 Supports video resolutions up to 2560 x 1600 @ 60Hz