CSRET 4 Ports 4K HDMI Matrix Switch and HDMI Splitter Support MHL ARC Audio Setting Most advanced HDMI True Matrix 4 in 2 out, Supports Any Input to Any Output or One Input to Both Outputs Output A supports additional audio output by SPDIF (TOSLINK) and 3.5mm headphone audio out 3 audio EDID settings: 5.1CH, 2.0CH and ADV; Output A supports ARC (Audio Return Channel) HDMI 1.4 certified, supports 4Kx2K/ Full HD 1080P and 3D; Supports 30/36/48-bit deep color, Blu-Ray 24/50/60fs/HD-DVD/xvYCC, and all digital audio formats including DTS-HD/Dolby-TrueHD/LPCM7.1/DTS/Dolby-AC3/DSD Supports IR remote control or button pressing. Durable metal construction with ventilation holes for quick heat dissipation and excellent longevity. Plug and play