The device is one 3Port HDMI audio extractor with support of ARC 3D and 4K x 2K which can easily switch three HD Sources or one MHL smart sources to one HD Display. Also any of the input sources support the audio extract by the SPDIF and LR audio output channel. The Switcher supports ARC function that can do TV audio return back to the AV receiver. Our devices offer solutions for noise space and security concerns data center control information distribution conference room presentation school and corporate training environments. FEATURES - One MHL/HDMI double input switch freely to one HDMI output. - Any input HD Source can do audio extract by the SPDIF or LR audio output port. - Support Full HD 1080P Full 3D 4K x 2K - Support ARC Function: Without adding one extra HDMI Cable it can reverse the audio to the AV Amplifier by HDMI Cable connection with HD TV while the HD TV receives the audio and video content. - MHL / HDMI working in dual mode can reduce the number of ports - HDMI to achieve the synchronization of audio signal separation. There are ADV / 2.0CH / 5.1CH three kinds of audio mode options - LED indication: when source or sink is working related LED will light on. - No loss of signal - Installs in minutes - Need DC 5V/1A power supply Specifications: - HDMI resolution: 24/50/60fs/1080p/1080i/720p/576p/576i/480p/480i - Video color format: 24bit / deep color 30bit / 36bit - Audio output: L/R optical - Max. bandwidth: 300MHz - Max. baud rate: 9.0Gbps - I/O TMDS signal: 0.5~1.5Volts p-p - I/O DDC signal: 5Volts p-p (TTL) - Input cable length: <=15m AWG26 HDMI standard cable - Output cable length: <=20m AWG26 HDMI standard cable - Max. working current: 500mA - Power adapter: Input: AC 100~240V (50 / 60Hz; Output: DC 5V / 1A) - Working temperature: -15~55'C - Storage temperature: -20~60'C - Working humidity: 10~90%RH - Storage humidity: 5~95%RH