To be more clear, right now the volume and brightness keys are used and I have to hold fn in order to execute an F1, F2, F3, F4, F5... command. Can I reverse this so it's function key by default and holding fn enables the volume and other special controls?


2 Answers 2


There are 2 methods to change the Fn behavior.

  • Method 1:
    Try one of the following combination:
    Fn + NumLock
    Fn + ~ key (it’s the one before a 1 on most US keyboards)
    Fn + Esc
  • Method 2:
    Change the Fn behavior from the BIOS menu.
    After you open the BIOS menu, go to Function Key Behavior.
    Then select Function Key First (if it doesn't work, repeat and select Multimedia Key First).
  • Are there any other ways to do this? Commented Jan 25, 2020 at 6:49
  • To my knowledge, these are the only ways to reverse the Fn key.
    – singrium
    Commented Jan 25, 2020 at 10:08
  • 6
    Fn + ESC works on me, using Xiaomi MIIIW keyboard! thanks for the solution!! Commented May 11, 2020 at 14:10
  • @AdityaKresnaPermana, glad it helped you :-)
    – singrium
    Commented May 11, 2020 at 14:43
  • 1
    On the dell latitude 5110, you need to choose Fn lock in the EUFI. Only then can you lock the choice to either the primary or secondary use
    – levengli
    Commented Dec 29, 2023 at 6:57

Yes, on a DELL using the ESC key, you will see a small padlock with FN written inside it. Press and hold FN key then tap the escape (padlock) key and then let both go at the same time. FN is then switched, to switch back, same operation. .

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