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Dell Latitude 5420 Rugged Service Manual

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Function Fn key lock features

NOTE The keyboard has Function key Fn lock capability. When activated, the secondary functions on the top row of keys become default and will not require use of the Fn key.
Figure 1. Fn key callouts. The following image shows the Fn key callouts.
Figure displaying numeric callout
  1. Fn lock key
  2. Affected Fn keys
  3. Fn key
NOTE Fn lock affects only the above keys (F1 to F12). Secondary functions will not require the Fn key to be pressed while enabled.

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