Use a Hi-Def monitor with an HDMI input as your main or extended display with any Mini DisplayPort computer. The Gefen Mini DisplayPort to HDMI Adapter enables the utilization of widely-available HDMI display devices with a MacBook Pro or any other computer with a mini DisplayPort video output port. Mini-DisplayPort is a compact version of DisplayPort, one of the newest digital display interfaces. The Gefen Mini DisplayPort to HDMI Adapter gives you the choice of an external HDTV display device as the main workspace or an extended workspace. This Adapter can also use work in a mirrored mode with a display projector using HDMI for an audience to view a laptop screen. Audio is passed through in both Windows and Mac operating systems.