Most full-size desktop keyboards have dedicated Media Keys (volume, play, etc.) and Function Keys that work without an Fn key. No Fn needed.
: Press Fn + Esc simultaneously. Look for a small padlock icon or "FnLk" printed on the Escape key. alternative for fn key on keyboard
If your keyboard lacks a physical lock key, you can often make the change permanent in your computer's firmware. Most full-size desktop keyboards have dedicated Media Keys
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