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The keyboard on the T420 has keys that, when enabled, work as a 10-key numeric keypad. To enable or disable the numeric keypad, press and hold Shift or Fn and then press NmLk (ScrLk). Note: The next drawing shows the locations of the keys that serve as the 10-key numeric keypad. The
locations of these keys are the same on every keyboard, though for computers using different languages, different characters are printed on the keytops.
Press FN or Shift and the "Nmlk" key to return to normal keyboard operation.
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