What is the Fn key on the keyboard and what is it for.

The Fn functional key, which can be found on almost every modern keyboard, performs important functions in combination with other keys. However, on Windows and macOS, this key works differently, reports SlashGear.

The Fn key on Windows keyboards is used to perform hardware functions that are tied to keys (for example, increasing volume). On macOS, the F1-F12 keys themselves control hardware capabilities, such as screen brightness or volume.

On a Mac, the Fn key can be programmed for a specific action without combinations, whereas in Windows this is not possible. Thus, users switching between platforms will need to adapt to the differences in the usage of this key.

The article reveals that the Fn key has different purposes on keyboards running Windows and macOS. A major difference is that on macOS, the F1-F12 keys control certain hardware capabilities, whereas on Windows, this key is regarded as functional and is used to perform various operations related to keys. It was also discovered that on a Mac, the Fn key can be programmed for a specific action without combinations, which may create certain inconveniences for users who use both platforms.