HDMI ARC Audio Adapter & DAC Converter can transmit audio from TV to optical coaxial 3.5mm audio via HDMI (ARC) interface , and output simultaneously, which perfectly solves problems of having no audio output interface that TV cannot be connected to the sound system. With the DAC converter function will help to use in more cases. Please Note When using the ARC channel, make sure that the HDMI port on the TV is marked with "ARC". Connection and Operation: 1. Connect the HDMI port of the adapter to the HDMI (ARC) port of the TV through the HDMI cable 2. Connect the converter's optical fiber and coaxial input port with the corresponding audio interface of DVD or PS3 through optical fiber cable or coaxial cable 3. Connect to the amplifier system through optical fiber cable, coaxial cable or RCA cable and 3.5mm audio cable 4. Connect the USB power cord to the Micro USB interface of the converter 5. Switch to the corresponding audio by flipping the switch Package Content: 1 x HDMI ARC Converter 1 x USB Cable 1 x Instruction