MacBook Can’t Use Mouse & Trackpad at the Same Time? Here’s the Fix

Some Mac users may find that if they connect an external mouse or trackpad to their MacBook or MacBook Pro, the internal built-in trackpad then no longer works. This may appear like a bug, and some users may think it’s a hardware problem, but the good news is that the inability to use both a mouse and trackpad at the same time on a Mac almost always has a simple software solution.
This walkthrough will quickly show you how to fix this issue and get a MacBook Pro or MacBook able to work with both the built-in trackpad as well as an external mouse or external trackpad.















