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…

TIP in comments) Here's a one-click fix for a macOS bug that breaks the two-finger zoom trackpad gesture : r/apple

Producing Music With a Trackpad. Improve your DAW workflow by using a…, by Nigel Rios

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How to Use Trackpad and Mouse at the Same Time on MacBook