I have the Rme fireface ucx with also midi in and outs.
The strange thing with the midi keboard is that I have this 2x times in the ableton option menue, wish I could delete one of this entries.
Normaly it should be only one in Ableton.

On the other side all vsts works great with the midi keyboard, so it would be great to even use the analog four with this keyboard.

Great that you will come back to me today, appreciate that and I will be available this evening after the worktime.