Indeed, keyboard work as follow (values are just examples, behavior is simplified): Why is it Often Seemingly Impossible to Map the Fn Key? (Sources – A) highrez forum post likely based on B) wikipedia post) However, because the operating system has no notion of the Fn key, the key can not normally be remapped in software, unlike all other standard keyboard keys. This allows the keyboard to directly emulate a full-sized keyboard, so the operating system can use standard keymaps designed for a full-sized keyboard. The Fn key is a form of meta-modifier key, in that it causes the operating system to see altered scancodes when other keys on the keyboard are pressed.

For a standard modifier key, the microcontroller inside the keyboard sends a scancode for the modifier itself, which is then interpreted by the operating system and combined with other simultaneous key-presses. Please share and like below, also comment below for any problem encountered.įn is not a normal keyboard key, such as the modifiers Ctrl, Shift and AltGr.

Hope with this, you have learnt How to Disable or Remap Function (fn) Key on Your Keyboard. 1) After Downloading SharpKeys, Install SharpKeys on Your Computer.Ģ) After the installation, Launch SharpKeys, it will come with a warning of writing a key to the registry, Click on OK.Ĥ) Below, Click on Add (Where Orange box is).ĥ) Select the Function (fn) Key (From Map this Key Table) and To this Key, You Select Turn Key Off (00_00) ino rder to disable the key, this Click ok OR Click on Type Key and Press the Function (fn) Key For Map from this Table and then select Turn Key Off (00_00) inorder to disable the key, then Click on OkĦ)Then Below on the right hand corner, Click on Write to Registry (Where the Orange Box is) Remap Function (fn) Key on Keyboardĥ) Select the Function (fn) Key (From Map this Key Table) and To this Key, You Select the key you want to remap it to on the list, and then Click on OK OR Click on Type Key and Press the Function (fn) Key For Map from this Table and then Click on Type Key and Press the Key you want to Use the Function (fn) Key for, then Click on OkĦ)Then Below on the right hand corner, Click on Write to Registry (Where the Orange Box is).

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