The product is a professional 4K HDMI/Audio Fiber Optical Extender including a transmitter and a receiver. Both of them have a HDMI port, an AUDIO port and a fiber port. With its fiber ports, the fiber optical extender transmit HDMI/DVI and analog audio to long-distance via optical fiber（single-mode fiber or multimode fiber）.
The transmitter have the ability of powerful EDID management via EDID DIP switchers. Moreover, It let choosing audio input between embedded HDMI audio and external audio via audio DIP switchers.