The Calrad 40-HDMI-EXT Ver. A Provides a simple method for extracting digital or analog audio from a single HDMI source at up to resolutions of 4Kx2K at 60Hz. Outputs for Analog (L+R) analog, Digital optical Toslink + Coaxial audio signals. Supports (ARC) function, decodes to Toslink\Digital Coaxial outputs only. A three position slide switch and push button are provided for selecting audio functions and audio output formats. This unit supports (Non-Volatile Memory) if power is lost or removed the unit will maintain all settings.