There are 2 separate paths you need to be concerned about
1. Getting the MIDI from the computer to the synth (so it knows what to do)
2. Recording/monitoring the Audio created by the synth back into the computer as part of the song

One is a MIDI Out signal, the other is an Audio In signal.
Two different drivers in many situations.

It's very possible that a USB MIDI adapter allows getting the MIDI to the synth, and a different Audio Interface allows getting the audio signal (from the synth) back in.


I do not work here, but the benefits are still awesome
Make your sound your own!