This HDMI high-definition audio return adapter has 1 HDMI input interface, an HDMI output interface and an optical output interface. This product is equipped with ARC audio return function, which can connect display devices (TVs, projectors, etc.) that support ARC (sound return) function to PA equipment (AV function, Soundbar, etc.) that do not support ARC (sound return) function. )connect them.Thereby, the problem of sound return between devices can be easily solved, making your audio and video equipment more convenient and comfortable to use. (Note: When you need to use the ARC function, please confirm that the CEC function of the display device is turned on, and please use a standard HDMI1.4 cable)HDMI high-definition audio return adapter, with 1 HDMI input interface, one HDMI output interface and one optical output interfaceThis product is equipped with ARC audio return function, which can connect display devices (TVs, projectors, etc.) that support ARC (sound return) function and amplifiers (AV function) that do not support ARC (sound return) function. Soundbar, etc.) connectThis HD audio return adapter can turn back the high-definition TV programs wirelessly received by TV or programs in the U disk (At present, smart TVs generally have U disk player function) to your amplifier or soundbar system to decode and play itWide Application This product offers solutions for noise, space and security concerns, data center control, information distribution, conference room presentation, digital and corporate training Environments for Laptop, DVD, iOS / Android player, Playstation Game ConsolesPOWER LED: Power indicator, lights up when the power supply is normal.Toslink OUT: Optical output interface, connect this interface to the power amplifier system with a cable.DC 5V: DC 5V power supply interface.HDMI Resolution: 24/50/60fs/1080p/1080i/720p/576p/576i/480p/480i, 24/30/2160pHDMI input and output supported audio formats: DTS-HD /Dolby-true HD / lpcm7.1/DTS/Dolby-AC3/DSDARC audio output format (depending on the display device): LPCM2.0/DTS/Dolby-AC3Maximum transmission bandwidth: 340MHzMaximum transfer rate: 10.2gbpsColour: blackMaterial: metalSize: 5.26x4.38x1.95cmPackage Contents:1 * Audio Return Adapter1 * USB CableOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.