This 4K 60Hz HDMI audio extractor can connect between a source device and a display device, separating one optical fiber signal and one R/L signal to a sound system for high-quality audio. It supports audio formats like AC-3, DTS, and LPCM, and features a volume knob for flexible control. The product has one HDMI input port, one HDMI output port, one optical fiber digital audio output port, and one stereo audio output port.