XJE&reg; 4k X 2k 4 Port High Speed HDMI 3 Port HDMI Switch + Audio Extractor Support Full HD 1080P, Full 3D,4K*2K Support ARC Function: Without adding one extra HDMI Cable, it can reverse the audio to the AV Amplifier by HDMI Cable connection with HD TV while the HD TV receives the audio and video content There are EDID AUTO /PCM2.0 / DTS5.1&Dolby5.1 three kinds of audio mode options Support input up to 10metres using AWG26 HDMI standard cable length, IR Remote can do switch to the Input sources, and also you can press the