Over view: The 4 Port hdmi switch 4 in 1 out allows Up to 4 HDMI ports to be switched to a single display terminal via remote control or buttons on unitl. Th HDMI switcher 4x1 HIFI provides advanced audio features to support a wide range of applications, including ARC, 3.5mm Headphone stereo analog audio output, Coaxial And SPDIF optical audio (Dolby Digital / AC3 and DTS 5.1CH) output. UltraHD HDMI 4x1 Switch can connect Four HDMI Sources to one HDMI display with video resolution up to Ultra HD / 4K (4096x2160@24fps or 3820x2160@30fps). Features: 1.supports Ultra HD | 4K, ARC 2.HDMI output provides additional Toslink,Coaxial and 3.5mm Headphone L/R analog audio outputs 3.SPDIF and Coaxial optical audio output supports incoming audio formats up to Dolby Digital / AC3 and DTS 5.1CH; L/R analog stereo output supports incoming audio format up to 2CH PCM 4.Coaxial and Toslink optical audio output supports ARC audio for audio theater application. Analog RAC L/R output does not support ARC 5.Three EDID settings for Analog 2CH, SPDIF 5.1CH, and HDMI audio applications 6.Support AWG24 HDMI v1.4 cable up to 15 meters @ 1080P & 3D; 5 meters @ Ultra HD / 4K 8.Can be fully operated with the IR remote control or buttons on the switch unit Package Contents: 1.One 4K HDMI Switch 4x1 2.One IR Remote Control 3.One5V DC Power adapter 4.One User Manual