1JUSTLINK HDMI Switcher Splitter 2x4 2 input 4 output 2X4 HDMI Switch/Splitter with 3.5MM Aux audio/SPDIF audio output Support UHD 4K 1080P 3D for TV DVD PS3 With built-in automatical adjusting amplifier, it can regenerate the HDMI signal before sending it to the outputs by a longer HDMI cable running to the inputs:input up to 25 metres, output up to 15metres When HDMI cable connects with HDMI output , the 2x4 switch/splitter can amplify the HDMI singal; supporting highest video resolution 1080p/60Hz, HDMI1.4a, 3D Switches between two input source devices and send the signal simultaneously to four displays.(the 4 display show the same piture at the same time) This Hdmi selector support single high definition display for multiple sources, such as DVD Players and Stellite Receivers, Digital Projectors, A/V Receivers, Set Top Boxes HDMI switcher - Plug and Play.This Hdmi splitter switch Support 3d-1080p,hdmi1.3v -Hdcp 1.2. You Can Connect 2 Different Input Source to four Display Such As connect Dvd, Camera, Cellphone,sky-stb,xbox360 roku to one tv /projector ,roku At the Same Time .