Certain microphone not recognized

I use a high quality mic and preamp "duett" from Apogee.
But I can't use this mic with TeamViewer presentations. It simply does not apear in the list of available mics. In the MAC system it is available. The only difference I can see is that on the duett input is no level fader (this is part of the hardware controle with duett).

What can I do?
I'd like to use this highEnd system for my presentations.