This HDMI audio splitter can extract embedded audio signals from HDMI sources and convert them into 3.5mm analog audio output and spdif output at the same time. spdif output supports 2 ch audio and 5.1 ch audio, including Dolby Digital 5.1 ch and dts 5.1 ch. Main Feature: Input port: 1 x hdmi, 1 micro usb power port, 3 x edid audio (pass, 2 ch, 5.1 ch) Output port: 1 x hdmi, 1 x spdif (optical fiber), 1 3.5mm connector. HDMI resolution: 4k x 2k, 24/50/60/1080p/1080i/720p/576p/576i/480p/480i Supported color formats: 24-bit/30-bit deep color, 36-bit Maximum bandwidth: 225 mhz Maximum baud rate: 6.74 gbps Maximum operating current: 190 mA Audio and video can be converted from hdmi output HDMI pass-through mode: You can convert audio and video from HDMI output. Spdif el/r no sound 2ch mode: extract 2ch digital pcm stereo audio signal from hdmi input. Output stereo audio hdmi/spdif el/r 5.1 ch mode: extract 5.1 Dolby Digital/dts and output through hdmi/spdif. Package Included: 1x HDMI audio extractor 1x Micro USB data cable 1x User Manual