*** Please pay attention: it is not possible to output 4K @ 120Hz HDR output between your RTX 3070, 3080, 3090 video card and LG Oled CX Series TV via our HDMI switch; Bidirectional 8K HDMI Switch / Splitter: The HDMI switch allows you to connect two HDMI sources to one HDMI display (Switcher) or connect one HDMI source to switch between two HDMI displays (Splitter). The length of the HDMI cables connected to both ends of the switch should not exceed 3 meters respectively*** IMPORTANT NOTE: two screens CANNOT be displayed simultaneously; Ultra HDMI 8K Splitter for Dual HDMI 8K TV / Displays: Support 8K @ 60Hz, 4K @ 120Hz, 1080P @ 240Hz resolution, give you transfer rates up to 48Gbps and backward compatible with all previous HDMI standards. Note: If you want to output 8K @ 60Hz, 4K @ 120Hz, and 1080P @ 240Hz through our splitter in your displays, please make sure your source devices, cable, and monitors can all support the resolution and refresh rate you you have to produceConvenient Switching Between HDMI Sources and Displays: You can get Ultra HD 8K video and picture experiences on your big screen monitors and HDTVs through our 8K HDMI switch. You can switch between two sources or two displays by pressing the "Select" button in the HDMI Switches, this is a necessary step. *** Non-automatic switchWidely used in many occasions: Our 8K HDMI switcher / splitter is easy to operate and can be widely used in study, entertainment, work and other occasions, smooth ultra HD video and picture quality experience, multi-source and multi-screen switching, providing multiple possibilities for work and entertainment. Especially to connect to latest PS5 and Xbox, you can enjoy 4K @ 120Hz gaming experience