Matrox DualHead2Go: Three Monitors, One Laptop

The Matrox DualHead2Go

Laptops may support dual external monitors, but without a stand-alone graphics card, their resolution leaves something to be desired. Another alternative is to use a USB connection for additional displays, such as the Sitecom USB2VGA adapter we tested last year. But because of bandwidth limitations, this solution's video playback and 3D graphics suffer from a noticeable flicker effect.

The DualHead2Go lacks a built-in graphics processor, which is why it won't work with an older notebook. Indeed, to produce an image in parallel to the one on the internal TFT with such wide resolution through an external output, graphics hardware is absolutely essential. That probably explains why the initial (and very short) list of compatible notebooks has only been recently expanded; you can find a current version of the compatibility list on Matrox' Website.

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