Samsung NP270E5J-K01US - Manual (Page 50)

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Chapter 3.
Using the computer
Touchpad On/Off Function
Locking with shortcut keys
If you want to use the mouse only without using the touchpad,
you can turn the touchpad off.
To lock the touchpad function, press the + keys.
You can set the touchpad and touchpad button settings in
the tabs that appear when clicking Charms menu on the
Desktop > Settings > Control Panel > Hardware and
Sound > Touchpad.
Touchpad