I don't understand what the RS232 interface is supposed to do. There is also nothing in the manual on the manufacturer's website: https://www.lindy.de/$WS/ld0101/websale8_shop-ld0101/products/media/manuals/38240-2V1.pdf. Ok, it says something about RS232 upgrade connection. But where can I find the corresponding upgrades?

I also don't understand the purpose of the DIP switches (see manual). Where is the advantage if I can set to pass only limited signals and not all of them by default?

Besides that, there are still connections without a function?

I think the device would possibly cover my needs (transfer PS4 Pro to 2 times 4K 60Hz), but seems to me to be more of a device with beta status for tinkerers and hobbyists.

Question

I don't understand what the RS232 interface is supposed to do. There is also nothing in the manual on the manufacturer's website: https://www.lindy.de/$WS/ld0101/websale8_shop-ld0101/products/media/manuals/38240-2V1.pdf. Ok, it says something about RS232 upgrade connection. But where can I find the corresponding upgrades?

I also don't understand the purpose of the DIP switches (see manual). Where is the advantage if I can set to pass only limited signals and not all of them by default?

Besides that, there are still connections without a function?

I think the device would possibly cover my needs (transfer PS4 Pro to 2 times 4K 60Hz), but seems to me to be more of a device with beta status for tinkerers and hobbyists.

Answer

Purpose of the DIP switch :
The DIP switch allows changes to the HDMI EDID settings.  
The 38240 allows you to "upload" its own EDID information via the RS232 port.  This setting allows you to force a custom EDID regardless of the display connected.

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