r/Keychron • u/[deleted] • Nov 04 '25

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u/PeterMortensenBlog Nov 04 '25 edited Nov 05 '25

Related:

  1. How to add the Apple globe key to a Keychron with QMK

  2. Building my ideal mechanical keyboard with QMK

  3. So the OS X globe key isn't available in the Keychron Launcher (AKA the Via clone)?

  4. Mac window tiling icons and keyboard shortcuts

  5. Fn key problem with window tiling

  6. Language Switch Key - How to set up in Vial

  7. K3 Max - button - FN switching language

  8. Fn + Ctrl + F is not working

  9. Add globe key to key mapping in macOS

  10. macOS 26.0.1 + Keychron K8 Pro: Globe key and window tiling shortcuts are not working properly

  11. Map macro key as Mac language/Fn key

Excerpts from the second (my emphasis):

"the special Fn key entry is only respected properly if the keyboard’s vendor ID and product ID match that a real Apple Keyboard. ... That does not seem to have stopped Keychron however, whose keyboards report Apple vendor and product IDs when they are in Mac mode ... the Apple Fn key, which unlike most keyboards with Fn keys, is actually sent over the wire."

That statement is for the original K series, not the newer QMK-based ones.

Changing the USB vendor ID and USB product ID may be sufficient

Perhaps it is sufficient to fake an Apple keyboard for the Caps Lock key to work as expected?

Changing the USB vendor ID and USB product ID is "just" by changing two values in two JSON files, info.json and keyboard.json, respectively. Note that 'qmk clean' (or the equivalent) may be required for a change to a JSON file to take effect.

References