techPowerUp posted a review on the Matrox DualHead2Go Digital Edition

Matrox made some waves with their GXM (Graphics eXpansion Modules) when they where first released, starting with the DualHead2Go. This module enabled dual monitor use with a single output. Their newest addition is the DualHead2Go Digital, which uses DVI as output method to allow higher resolutions. We try the device in Windows XP and Mac OS X using two 19 inch DVI based LCD montors.

Matrox DualHead2Go Digital Edition Review