Matrox DualHead2Go Notebook Multi-display Breakout Box
 

"The Matrox DualHead2Go is black box about the size of a paperback book that enables laptop and tablet PC users multi-display functionality from twin side-by-side 17" or 19" LCD monitors. The DualHead2Go works off of the analog video output from an approved list of notebooks at resolutions of either 2048x768 (60, 75, 85 Hz) or 2560x1024 (60Hz). The device takes the novel approach of splitting that double-width video signal in half, with one portion of the screen going to monitor A, and the second portion going to monitor B. The end result is that two monitors will act as a single screen, yet with just one monitor cable plugged into the host computer."
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