The 1.1 firmware update for Launch Control XL 3 adds the ability to send MIDI from your computer to the MIDI out ports (Launch Control XL 3 Updates – Components).
To ensure you can access these additional ports on your Mac, you may need to complete the following steps after updating from earlier versions of the firmware.
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Open Finder and navigate to Applications > Utilities > Audio MIDI Setup.
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With Audio MIDI Setup open, go to the Window menu in the top bar, and select Show MIDI Studio.
- You should see your Launch Control XL 3 as a device in the MIDI Studio (appearing as LCXL3 1 or similar).
4. If you see only two pairs of input and output ports (as in the screenshot) you'll need to disconnect your Launch Control XL 3, select it in the MIDI Studio and press Delete on your computer keyboard.
5. Reconnect the Launch Control XL 3 and you should now see two additional output ports (as below):
You will now see the additional DIN ports available in your DAW: