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
IDG
    Related:
  • Mac
  • Keyboards
  • Input Devices
  • MacOS
Glenn Fleishman’s most recent books include Take Control of iOS & iPadOS Privacy and Security, Second Edition (covering iOS 15/iPadOS 15), Take Control of Your M-Series Mac, and Take Control of Securing Your Mac. In his spare time, he makes Tiny Type Museums. He’s a senior contributor to Macworld, where he writes Mac 911.