?HDMI 2.1 Switch 4x1?The HDMI Switcher 4 in 1 out allows four HDMI sources to one HDMI display, no need to switch devices by plugging and unplugging the HDMI cable. Seamlessly switch between games, movies, and TV shows. No complicated setup and drivers are required.?Smart 8K HDMI Switch Box? Video Format - The Aluminium HDMI Selector supports multiple resolution up to 8K@60Hz 4K@120Hz 2K@144Hz 1080P@240Hz 4:4:4 8bit. Also supports VRR, HDR10+, Dolby vision, 3D effect. Audio Format - Supports ARC, Dolby Atmos, DTS X,Dolby True HD, DTS-HD Master Audio, PCM7.1.?Switch Devices Easily? The HDMI Auto Switcher, Just simply use the remote control or manual control to swap signals, or control your device through the automatic switching function, the indicator lights show the active port.?Broad Compatibility? llano 8K HDMI switch is compatible with most standard HDMI devices. Input: PC, PS4 Pro, PS5, Xbox Series X, Nintendo Switch, Blu-Ray Player, Roku, Chromecast, MacBook, Computer, etc. Output: UHD TV, Projector, Monitor, etc.?Note? HDMI ARC Switch: 1.Only Input 4 port can support ARC mode. 2.Both TV and Stereo need to support ARC, otherwise, ARC mode cannot be supported. 3. Does NOT support Sonos-ARC/e-ARC. Main problem: Most using issues are caused by poor quality cables. Highly recommend certified HDMI 2.1 cable less than 10ft / 3m. Supports only 4 in 1 out, does NOT support 1 in 4 out or “Bi-directional”.