Satechi thunderbolt 4 and two monitors LG Ultrafine 5k

Thanks for reaching out max_al,

It sounds like you're trying to set up multiple external displays for use with your MacBook Pro. We can help.

Not all Mac models support more than one external display. It wasn't clear which model MacBook Pro you're using, but this guide will let you know exactly what is supported, and what is not:

Find out what your Mac supports

Your external display will be dark if it exceeds the maximum number of external displays that your Mac can use at the same time. This limit varies by Mac model.

Your external display will be dark or use a lower resolution or refresh rate if you configure it to exceed the maximum supported resolution or refresh rate. This limit varies by Mac model, display, the video cable and adapter used with the display, and the resolution and refresh rate of other connected displays.

Learn what to do if your screen became dark after you changed its resolution or refresh rate.

To find out how many external displays your Mac supports, and at which resolutions and refresh rates, check the specifications for your Mac model:

* Mac mini

* Mac Studio

* Mac Pro

* iMac

* MacBook Pro

* MacBook Air

* MacBook 

If you're using a Mac that supports more than one external monitor, you can find some troubleshooting steps to Connect a display to your Mac and what to do If your external display is dark or low resolution.

Hope that helps.

Take care.