Logitech MK550 2nd, 1st, Keyboard features: F-keyusage

Logitech® Wireless Wave Combo MK550

Keyboard features: F-key usage

User-friendly enhanced F-keys let you launch applications easily. To use the enhanced functions (blue icons), first press and hold the  '/  key; second, press the F-key you want to use. 

Tip  In the software settings, you can invert the FN mode if you prefer to access directly the enhanced functions without having to press the FN key.

2nd - Press an F-key1st - Press and hold the FN key

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