
Click on the Apple logo at the top left of the screen, and select System Preferences from the context menu.Here’s how you can disable the trackpad when a mouse is connected. That means, when you connect an external mouse, OS X will automatically disable the built-in trackpad of your MacBook and allows you continue using the connected mouse. OS X gives you the option to turn off the MacBook’s trackpad when another mouse is connected. Hence, it is a good idea to disable the Trackpad when a Mouse connected to your MacBook.

Though the trackpad on your Mac is quite good at differentiating between an actual click and your palm brushing the Trackpad, accidental clicks may happen and these can be quite annoying. However, if you prefer plugging an external mouse with your MacBook to get your work done, you might want to disable Trackpad to prevent unintentional or unwanted clicks. 1) Click the Apple icon > System Preferences from your menu bar. With one simple setting, you can avoid hitting your Mac trackpad by mistake. Disable the Mac trackpad when a mouse is connected. The built-in trackpad, which is considered as the primary input method for the Apple laptops, contains plenty of features and it is almost as fast as a mouse. Here’s how to automatically disable the trackpad when a mouse, or wireless trackpad, is connected on Mac.
