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To make up for a lack of keys early laptops came with a special function key the fn key. The secondary functionality is sometimes called action keys mode or hotkeys.

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On the old compaq slt the fn function key is located in the lower left corner enclosed in a rectangle.

How to use fn key on keyboard. Your keybaord has an fn key that when held down will allow you to use the secondary action of the fn keys. For example on the keyboard below the fn lock key appears as a secondary action on the esc key. On a pc the default function of the fn keys is set in the bios.

On keyboards with an fn key hold down fn and press the key to use the alternate commands. The location of the fn key might vary slightly. If you don t you may have to press the fn key and then press an fn lock key to activate it.

Some laptops let you lock the fn keys. On keyboards with an fn key hold down fn and press the key to use the alternate commands. You can also press and hold fn while moving your finger up and down on the navigation pad to scroll within a document.

You can also press and hold fn while moving your finger up and down on the navigation pad to scroll within a document. On some keyboards press the fn key to enable that command. To disable it we d hold fn and press esc again.

You can press and hold fn while pressing keyboard letters m j k l u i o p and 0 to match the physical layout of a numeric. This was used in combination with other keys like a shift key giving those keys multiple purposes. Keyboard function keys f1 through f12 often have a printed icon that indicates a secondary action such as muting sound or adjusting display brightness.

To enable it we d hold fn and press the esc key. Use the fn key. This is like turning caps lock on which allows you to type all capital letters.