The Esc/Fn Lock key is a special key found on many laptop keyboards. It is typically located in the upper-left corner of the keyboard, next to the F1 key. When the Esc/Fn Lock key is enabled, the F1-F12 keys function as standard function keys. When the Esc/Fn Lock key is disabled, the F1-F12 keys function as media keys, such as play/pause, volume up/down, and brightness up/down.
There are several benefits to using the Esc/Fn Lock key. First, it can help to prevent accidental presses of the F1-F12 keys. This can be especially helpful if you are using your laptop for gaming or other activities that require frequent use of the Esc key. Second, the Esc/Fn Lock key can help to improve the ergonomics of your laptop keyboard. By disabling the F1-F12 keys, you can reduce the amount of finger movement required to access the Esc key. This can help to reduce fatigue and discomfort, especially if you are using your laptop for extended periods of time.