Sabrent USB-DH88 USB 2.0 to VGA/DVI/HDMI Adapter for Multiple Monitors up to 2048x1152/1920x1080 Each (DisplayLink DL-195 Chipset) Connect three or more monitors to any brand of laptop or desktop (one adapter required per monitor) Plug and play USB 2.0 connectivity to VGA, DVI, or HDMI monitors and projectors Uses top-of-the-line DisplayLink DL-195 chip, supporting resolutions up to 2048x1152 / 1900x1200 Windows 8/7/Vista 32/64 and XP 32-bit drivers via Windows Update, download, or disk Linux and Mac beta-quality drivers available but with important limitations -details below