ESI RoMI/O Manual page 11

3. MAC OS X
In Mac OS 10.1 (Jaguar) or later, you can check if your RoMI/O is recognized properly by using Audio MIDI Setup
application in Applications/Utilities folder. Launch the Audio MIDI Setup application and click the MIDI Devices
tab on the Audio MIDI Setup window. If the RoMI/O is recognized properly, the ESI-RoMI/O icon will be appeared
on the window.
13