Networking cable range

Hello
I'm having a problem with the networking cable range.

I don't find the part in the config where i can change the range of the network cables.

Could someone help me with that?

You cannot, to my knowledge, change the maximum size of a wired network. The limit is there to help prevent lagginess on servers, and very large wired networks apparently require significantly more computational power than wireless networks, hence the hard limit.