Mac notebooks: Enabling the "Ignore trackpad when mouse or wireless trackpad is present" feature
Learn how to locate the "Ignore trackpad when mouse or wireless trackpad is present" feature, which you can use to disable the integrated input device on your Mac notebook when an external input device is present.
The option to enable or disable "Ignore trackpad when mouse or wireless trackpad is present" on your Mac notebook can be found in System Preferences:
OS X v10.7 Lion or OS X Mountain Lion v10.8
From the Apple () menu, choose System Preferences.
From the View menu, choose Accessibility.
Click the Mouse & Trackpad pane.
OS X v10.6 Snow Leopard
From the Apple () menu, choose System Preferences.
From the View menu, choose Universal Access.
Click the Mouse & Trackpad pane.
Learn more
To determine if your Mac notebook has a multi-touch trackpad, please see How to determine if your notebook has a Multi-Touch trackpad.
To learn about Macs with multi-touch trackpads and gestures, please see:
MacBook Air and MacBook Pro (Early 2008): Useful keyboard and trackpad tips and shortcuts
