Inspiron 3593 - Ethernet keeps disconnecting

Hello

I have the same problem , described and solved in

https://www.dell.com/community/Inspiron/Inspiron-5570-Ethernet-keeps-disconnecting/m-p/6032590#M15736
https://www.dell.com/community/Inspiron/Ethernet-wired-connection-keeps-disconnecting/m-p/6216566#M40773

but the suggested and solved solution didn't solve me the problem.

Ethernet keeps disconnecting 

Any more ideas ?