Modern Apple Mac Book's & Mac Book Pro's use a new, compact video output called Mini Display Port, meaning they will not connect to your existing HDMI monitor, TV or projector. The same is for many Windows™ graphic cards which also feature this compact Mini Display Port™ interface, by-passing the current HDMI standard we used in the past. The new LMS Data C-MDP-HDMI solves this issue & allows instant connection of your existing HDMI video device to be connected to any Mini Display Port, quickly & of course without the need for any drivers or software to be installed. Ideal for Mac OS X, Windows 7™ or Windows 8™ as well as other leading operating systems, as the C-MDPHDMI works at the system level, meaning it's configured instantly.