What is audio interface use for?
What does an Audio Interface do? Audio interfaces convert microphone and instrument signals into a format your computer and software recognize. The interface also routes audio from your computer out to your headphones and studio monitors.
Why is my audio interface not showing up?
Check all your cables and connections and the volume controls of your instrument. Make sure the cable is connected to the correct input of your interface. Try another cable, a common problem is a broken/faulty cable.