1、Can realize synchronous separation of audio signals. PASS/0CH/1CH three audio modes are available. 2、High‑definition multimedia interface audio and video loop out, output to your display device projector, TV, etc. 3、Supports 4K30HZ ultra clear picture quality, video effect picture quality is smoothly and exquisite. 4、Built‑in signal amplification module, the signal amplification processing dose not affect the smoothly and compatibility. 5、Simple and easy to use, plug and play, made of high quality aluminum alloy material, exquisite workmanship. 1 x Audio Extractor1 x USB Charging Cable 1 x Manual  Item Type: Audio ExtractorMaterial: Aluminum Alloy Color: Black Input Interface: High‑Definition Multimedia Interface USB PowerOutput Interface: High‑Definition Multimedia Interface SPDIF R/L audio interfaceHigh‑Definition Multimedia Interface Supports Video Color Format: 24 bit/dark 30 bit /36 bitHigh‑Definition Multimedia Interface Maximum Transmission Bandwidth: 225MHzHigh‑Definition Multimedia Interface Maximum Transmission Speed: 6.75GbpsMaximum Working Current: 500mAInput Voltage: DC 5V 1AOperating Temperature: -15~+55°CWorking Humidity: 5~90%RH (no condensation)Instructions: The High‑Definition Multimedia Interface input into an High‑Definition Multimedia Interface output, a fiber audio output and an R/L analog audio output, this product is very simple to use, plug and play: when the converter power is connected, the red LED will light up; When successfully connected to the high definition TV, the green LED will light up and you can use it normally