Very few users The x (and not only) I get used to using the key Caps Lock, this being rather pressed in the way accidental (and quite often), which can become quite irritating in a fairly short time (especially for those who are used to writing by looking at the keyboard and observing only after writing that they wrote in capital letters).
If you consider the key Caps Lock It is not necessary and it happens to you quite often to press it accidentally when you type, you most likely want to find out how you can Disable Caps Lock, so that its pressing has no effect.
How do we turn off the Caps Lock key in OS X?
- open System Preferences and click on Keyboard

- In the open window, click on the button Modifier Keys displayed in the right-handed corner

- Then click on The Drop-Down menu from the right Caps Lock, select the option No Action and click on OK

And ready. After you do this setting, The Caps Lock key will be completely disabled, and its accidental pressing will no longer activate writing in capital letters.
Note: Using Modifier Key you can deactivate or remap and keys Control, Option or Command.
STEALTH SETTINGS – How to disable Caps Lock on Mac OS X