This optical audio switcher is designed for home theater systems, allowing you to switch between three optical fiber signals to two sets of SPDIF/TosLink signal receiving devices. It supports LPCM 2.0, DTS, and Dolby-AC3 audio formats and has an IR remote control for easy operation. The device also features signal retiming, over-voltage protection, and LED status indication. It comes with a switcher, USB cable, manual, remote control, and Toslink cable. The switcher is easy to install and requires a DC5V/500mA power supply.