MacOS – Modifier Keys not working for swapping Option/Command on external USB Keyboard

keyboardmacos

I have been using the Modifier Keys option for a few years. It is however not working on Sierra for external keyboards.

The screenshot shows the configuration:

enter image description here

I have exited System Preferences and only on Sierra this does not take effect. The laptop has been rebooted a few times as well: still no change.

I have tried this for several external keyboards from different manufacturers and on two different Sierra laptops.

Anyone have a workaround?

Best Answer

Karabiner Elements to the rescue:

enter image description here

This actually works!

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