Before You Start
The DualHead2Go isn't just a monitor extension cable or video splitter box. It's a complex piece of electronics in a palm-sized box that accepts your portable's analog video output and from it extrapolates the data it needs to create a custom resolution for the dual displays. To do that effectively, it needs to know what to expect from your graphics subsystem so it can interpret that information correctly. This means the DualHead2Go doesn't work with everything.
Unless you like to gamble, it's easiest just to check Matrox' compatibility list first. New portables are added to it as they pass compatibility tests. And although the DuaHead2Go was designed with a laptop in mind, don't be surprised to see a few motherboards with integrated graphics systems included. If your portable or desktop system isn't on the list, you can also run the Matrox DualHead2Go System Compatibility Tool. It should tell you just as certainly whether or not the DH2G will work.
Installation
Matrox long ago learned the art of the easy install. The software drivers go on first with a minimum of questions, none more difficult than "Ok?" That done, it's simply a matter of physically connecting the DH2G box to your portable on one side and then attaching your monitors to it on the other, literally. The hardware has four connectors -- one for the input from your laptop, two for the outputs to the dual monitors, and one for external power.
It wasn't easy to find a nit to pick with the hardware layer, but I did manage to come up with one, small, detail that I'd prefer to see changed. Labels on the output side of the DH2G box indicate connecting points for "Output 1" and "Output 2" and that's counterintuitive to the actual monitor orientation, which is left and right. At the risk of over-simplification, I'd suggest that "left" and "right" might be better labels.
Once all the connections are made, just power up the displays and your notebook. You'll see multiple images immediately although they may not be those you want. In my case, it was the full image on the portable's screen and a copy of the left side of the portable's display on each of the two external displays. It was interesting, but hardly utilitarian. It was also my fault. I'd forgotten that I needed to switch the portable into external display mode.
That done, and after a few deft settings changes in the Matrox PowerDesk software, I can honestly report that the resulting 2560 x 1024 view is truly impressive and also has the potential to be horribly frustrating although not by any of Matrox' doing.
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