Você tem algum adaptador HDMI < - > DP? Se não, então vá buscar alguns. :)
De Perguntas frequentes sobre TripleHead2Go :
da Matrox:Can I use the TripleHead2Go DP Edition even if my monitors don't have a DisplayPort connector?
Yes. When the proper adapter is used, DisplayPort can convert its signal to DVI, VGA or HDMI. Matrox offers optional cable adapters that enable you to connect your TripleHead2Go DP Edition to DVI- or Mini DisplayPort-compatible equipment. DisplayPort to HDMI and DisplayPort to HD-15 (VGA) cable adapters are currently unavailable from Matrox. Note that Matrox is unable to validate third party adapters.