A High-Definition Multimedia Interface or HDMI connection is a must for any A/V professional that deals with large, uncompressed video and audio files. With this ATEN wireless HDMI connection, you can send these large files through the air from one HDMI port to another at a range of 30m. You can also throw an additional HDTV into the mix, and stream 1080p resolution with 5.1 channel digital audio.