If you're looking for a simple and inexpensive way to increase your productivity, consider adding a second or third monitor to your computer set-up. Multi-display systems increase productivity, and the demand for more screens are steadily increasing. New technology, specifically DisplayPort's Multi-Stream Transport (MST) - is now making this a reality for many users. Picture this: Email on one screen, an Excel spreadsheet on a second, and a PowerPoint presentation on a third.