Your Mac won’t type U, I, O, J, K, L, and M? Here’s why

The vestiges of Num Lock remain in macOS in a newer feature, Mouse Keys.

mid 2018 macbookpro keyboard

The MacBook Pro features Apple's third iteration of the butterfly keyboard. The company says this version shouldn't be as loud as before.

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Glenn Fleishman is the author of dozens of books. His most recent, updated for iOS 14, iPadOS 14, and Big Sur, are Take Control of iOS and iPadOS Privacy and Security, Take Control of Your Apple ID, Second Edition, and Take Control of Wireless Networking and Security. He’s a senior contributor to Macworld, where he writes Mac 911.
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