Export audio port


I need to export the audio PORTS with Cubase Elements 7.
I know how to export the audio OUTPUTS (such as stereo out etc…) but did not find a way to export the audio PORTS.

There must be a way : if i connect cubase to an external multitrack soundcard via USB, the audio PORTS are exported accordingly.

Any solution ?

Thansk !

What is an audio port?

I’ve used the term port talking about which midi port to use, haven’t heard it referred to in audio though…

What are you trying to capture?

Yeah, what exactly is an audio port?