Activation: Press and release the 
NumLock key once (i.e. a toggle). The green light at the top right hand corner of the keyboard labeled 
Num Lock will turn on.
Deactivation: Press and release the 
NumLock key once (i.e. a toggle). The green light at the top right hand corner of the keyboard labeled 
Num Lock will turn off.
Access With NumLock On: The keypad will generate numbers if the 
NumLock is active. If you press and hold the 
Fn (Function) key at the same time as 
NumLock is active, the numeric keypad will revert to the normal keyboard (i.e. letters).
Access With NumLock Off: Most computers will boot up with 
NumLock off, and in this case, the numeric keypad will perform its normal keyboarding functions. The navigation keys can be accessed at any time by holding down the 
Fn (Function) key and pressing the appropriate key on the embedded numeric keypad.
- To Get Numbers: Toggle Access (Press NumLock and Release).
 - To Get Navigation: Shift Access (Press Fn and Hold it Down).