Справочник Пользователя для Samsung NP275E5EK01US

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 

Sound > Touchpad.

If an external USB pointing device is connected in the Charms 

Sound > Touchpad, check Disabled to disable the touchpad 

feature when connecting to the USB mouse.

This auto-locking function is not provided for some models.