OCModShop posted a review on the Matrox TripleHead2Go Digital Edition

As the name suggests, the TripleHead2Go Digital Edition improves over their previous model with the replacement of analog VGA to completely digital DVI, both for input and output. This new unit will still take regular VGA as a source, and outputs to three different monitors. To add even more flexibility, you can mix and match monitors however you wish: not all of your monitors have to be digital. Your multi-monitor setup can include 2 analog monitors and a digital LCD panel, a 3-LCD setup, or any other combination. If you can't scrounge together 3 monitors, then don't worry: the unit will also function as a DualHead2Go, and you can add another monitor later.

Matrox TripleHead2Go Digital Edition Review