DGODRT 4K 120Hz HDMI Splitter 1 in 4 Out, HDMI 2.1 Splitter 8K@60Hz 4 Way Distributor Box Mirror/Dulplicate 4 Screens Support 3D HDCP HDR Dol-by Atmos Scaler EDID

4K 120Hz HDMI Splitter 1 in 4 out: Simultaneously mirrors copies 1 HDMI input source to 4 HD output displays. Copy video and audio without any loss. Supports automatic downscaling or forced downscaling.

8K UHD Resolution: DGODRT HDMI splitter can support 8K@60Hz, 4K@120Hz, 1080P@240Hz, and support 8K and 4K different resolutions work simultaneously. It also supports HDMI 2.1, HDCP 2.3, Doby Vision and 48Gbps 40Gbps high-speed video bandwidth.

Please follow the connection sequence: power source—>output sources—>input source. If your input device is a laptop, you can press "Win+P" to swtich the output mode to "Extended mode" so that all 4 output screens will show the same content of the extended part. (4 Screens always show the same picture)

If some of your output screens go black, it means your screens do not support current refresh rate. Please check the refresh rate of your input source, and adjust the refresh rate higher or lower to fit your screens. (Remember reset all the connection after adjust the refresh rate.)

Wide Compatibility: HDMI 2.1 splitter is perfectly compatible with PC, Roku 4, PS5, Xbox, Blu-ray players, projectors, monitors and more. It is also compatible with Windows, Mac OS and Linux operating systems.