– ARC (Audio Return Channel) which allows Audio to go in two directions, – HEC (HDMI Ethernet Channel) or ethernet over HDMI, Some additional HDMI features that might be available for your equipment: HDMI has pretty much become the standard for audio and video, supported by numerous computers, TV’s and Projectors. If all your choices are wide open, then I highly recommend using HDMI on both your TV and Computer, as it offers Audio and Video transport in highest quality.
