Remarks: 1)to use the HDMI ARC(audio return Channel), you TV must support HDMI ARC/ 2)when switch to 5.1CH, the audio system connected to the 5.1CH port must have decoding funtions.Otherwise, when the source is DTS/DOLBY-AC3, there wont be sound 3)this HDMI audio converter can only support HDCP 1.4 output 4)this audio extracor's power port comes with micro usb or DC port, we will send it randomly 5)HDMI ARC function is only applicable to toslink port. 6)this audio extractor does not support any Chrome cast such as google chrome cast,Fire Sticks. 7)This audio extractor is not recommended to use with monitor and projector.For quite some models, there will be edid problem. Descriptions: The HDMI to HDMI audio converter allows the HD Source connected to single HD Display and adds extra one L+R and SPDIF audio out port.Our devices offer solutions for noise, space and security concerns, data center control, information distribution, conference room presentation, school and corporate training environments. Features: 1). Extract the digital HDMI audio signal from the HDMI input to 2 channel analog stereo output or 5.1 channel Audio output 2). Supports resolution up to 4K@60hz, YUV4:2:0 under HDCP 1.4 3). Supports deep color up to 36bit 4). Support 3D 5). Three Audio EDID Settings: 2.0CH/5.1CH/By pass 6). Supports Apple TV and various Blu-ray player, satellite receivers 7)HDCP1.4 compliant Package contents: 1)4K HDMI audio extractor X1 2)USB DC power cable or Micro USB power cable X1(power adapter is not included)