HDMI connectors are 24K Gold plated.Audio Return Channel - it in HDMI 1.4 enables a TV, via a single HDMI cable, to send audio data "upstream" to an A/V receiver or surround audio controller, increasing user flexibility and eliminating the need for any separate S/PDIF audio connection.Compatibility - Supports 3D Content- Supports Audio Return Channel- Supports Highest Refresh Rates up to 240hz and 48-Bit Deep Color- Supports Transfer Rates of Up to 340Mhz or 10.2gbps- Supports True HD Dolby 7.1 and DTS-HD Master Audio - HDCP Compliant - Ethernet & Audio Return channels eliminate extra network and audio cables. Less cables means slimmer cable management box! Supported video resolutions:
Full HD 1080p Quad HD 1440p 3D HD 2x1080p Note:the input port must connect to the input device and output port must connect to the output display