4x 1080p Video Resolution - Support for video resolutions up to 4x1080p and beyond. Enables your display to rival Digital Cinema systems used in movie theaters. Support for new features - 3DTV(all formats), Mobile connectivity, and Automotive connectivity. Audio Return Channel (ARC) - Allows an HDMI-connected TV with built-in tuner or DVD player to send digital audio data back to a surround audio system. Eliminates the need for a separate audio cable. HDMI Ethernet Channel (HEC) - Adds high-speed bi-directional networking to an HDMI link. Allows users to take full advantage of their Internet-enabled devices without a separate Ethernet cable.