Connect your older Mac without an HDMI output to an HDMI display using this Mini DisplayPort and USB Male Audio to HDMI Adapter from Monoprice! This adapter converts the mini DisplayPort video output to HDMI. Stereo (2-channel) audio is obtained through the USB connection and is mixed with the video to produce a complete HDMI audio/video signal. Note that this adapter does not support more than 2-channel audio. Additionally; it is unidirectional asnd therefore cannot convert HDMI to mini DisplayPort signals. Finally; on some Macs the video connector blocks the adjacent USB port. HDMI; the HDMI Logo; and High-Definition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC in the United States and other countries. Apple and Mac are trademarks of Apple Inc.; registered in the U.S. and other countries.