Pro Tools uses Audio MIDI Setup on Mac and MIDI Studio Setup on Windows computers to generate a list of MIDI devices. In this section I will show you how to make a custom MIDI device and how to use an external hardware such as a software synthesizer.
If you are using a MIDI interface with multiple ports, you might have some devices permanently connected to some of the ports. In this example, I will create a new external MIDI device attached to my MIDI interface port so that Pro Tools can show it directly inside the software. Here are the steps to create a custom MIDI instrument: