The Fn key is also known as the function key, and on Windows and most Mac keyboards, you'll find it located in the bottom-left corner of your keyboard.

The methods for turning on a keyboard's backlighting can vary. In this guide, we'll discuss a few of the most common ways to switch on your keyboard light.

Can't change screen brightness? If the Function key for Brightness is not working in Windows 11/10, the problem may be with drivers. This post will help you fix the issue.