Octava-1x1 HDMI Audio Converter (HDMI to optical toslink)+ ARC with EDID Emulator 1 HDMI Input , 1 HDMI output Convert audio from HDMI to optical toslink audio . (works with Apple TV 4 and devices lacking a optical audio output) Toslink Digital Audio - supports PCM, Dolby Digital, DTS digital audio EDID Emulator - customized EDID can be installed via USB port Supports high resolution video 480p, 720i/p, 1080i/p