The XD HDMI to Mini DisplayPort Adapter from Kanex allows you to use your 27" iMac's display as an HDTV for an external HDMI device. You'll be able to use the computer's HD screen to display video and play audio from a Blu-ray player, PS3, Xbox 360, or other device with HDMI output.
Designed exclusively for Apple iMac 27" computer
Toggle between iMac 27" OS X and HD playback by using a Hot Key - Command+F2
Toggle volume and brightness controls through your wireless Bluetooth keyboard
Supports 2-channel audio pass-through
Provides full screen playback with audio
Supports up to 1920 x 1200 resolution