Supported systems:Microsoft® Windows® 20002, Windows XP (32 / 64bit), Windows Vista™ (32 / 64bit), Windows Server 2003//2008 (32 / 64bit), Mac® OS X v10.4 and Mac OX v10.5 Leopard. 2. Matrox DualHead2Go Digital. DualHead2Go Digital allows you to connect two monitors to your laptop or desktop computer. It connects to the VGA output and provides high-quality 2D, 3D and video across all monitors. Being external, they are ideal for platforms previously limited to a single display, such as systems with integrated graphics or no available expansion slots. Run two independent monitors from your PC even if that system only supports a single monitor output Dual monitor setup lets you organise your workspace more efficiently, multi-task more comfortably and make fewer errors Open a different application on each monitor or stretch one application across two monitors Quick and easy to install with no need to open the computer case 1 x VGA input connection 2 x DVI-I output connections 2 year manufacturers warranty