Port (KNX, old, not shown)
What it is
An old box for the KNX gateway port. In this configurator version the code that draws it is never called, so it does not appear on any screen.
What to enter
Nothing. It is not shown.
What it changes
Nothing, because it is not shown. (It would set the KNX port the hub uses.)
If it goes wrong
Set KNX details on its tile on step 1.