If your MOTU audio interface has MIDI ports and is not appearing as a MIDI device in OS X's Audio MIDI Setup utility, there is a good chance that your interface was turned on during driver installation. As specified in the driver installation instructions, the interface must be turned off during installation. It is also a good idea to make sure you have the latest drivers, available on our downloads page.

Follow these instructions to reinstall the drivers:

• Turn the interface off.
• Launch the installer and choose Uninstall from the install drop down menu in the upper left hand corner of the window. Once the operation is complete, quit the installer.
• Go into the Hard drive/Users/your user name/Library/Preferences, locate the files named com.motu.firewire.CueMix.console.plist, com.motu.firewire.SMPTE.console.plist, com.motu.FireWireAudio, and MOTU FireWire Console.prefs, move them to the trash and empty the trash.
• Go into the Hard Drive/Applications and make sure the MOTU Audio Setup, MOTU CueMix Console and MOTU SMPTE Setup are no longer there. If they are still there, move them to the trash and empty the trash.
• Restart the computer. Launch the installer and install the latest MOTU OS X FireWire drivers. Once the installer is complete, restart the computer. Do not turn the interface on until the OS is fully booted with all drives and icons mounted on the desktop.