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I have an Alienware M18x r2 laptop, and am trying to hook up 3 external monitors to it in a non-linear fashion. I've discovered a product called Matrox TripleHead2Go which should (hopefully?) let me do exactly this, but I'm still trying to work out the logistics of using it.

My laptop has the following output plugs: VGA, HDMI, and dual-mode DisplayPort. TripleHead2Go has a VGA model, but the achievable resolution is not as high as for the DisplayPort model. (3x 1680x1050 versus 3x 1920x1080)

What I'm wondering is: Is this setup feasible? Can the TripleHead2Go DP or Digital SE models support dual-mode DisplayPort? If so, do I need some kind of adapter to manage this?

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  • Dual mode DisplayPort can generate TMDS and clock for single-link DVI/HDMI signaling with a simple line-level conversion dongle. If your hooking it up to a DisplayPort device you can just ignore this capability and treat it as straight DisplayPort.
    – Brian
    Aug 4, 2013 at 0:14
  • @Brian Do I need an adapter to convert from the dual-mode DisplayPort (which I think uses a mini DP output plug?) to the regular DisplayPort, then?
    – Cat
    Aug 4, 2013 at 0:17
  • Just needs the connector size that matches what your plugging each end into. So a DP to mini-DP cable would be fine.
    – Brian
    Aug 4, 2013 at 0:25
  • @Brian Great, thanks. You could probably polish that into an answer if you wanted to. (Since it does seem that the dual-mode port is usable as a mini DP.)
    – Cat
    Aug 4, 2013 at 1:20

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