Lenovo G400s Touch User Manual page 10

Chapter 1. Getting to know your computer
Using the keyboard
Your computer has number keys and function keys and may also have a
numeric keypad (G500s/G505s/G500s Touch only) incorporated into its
standard keyboard.
Numeric keypad
G500s/G505s/G500s Touch
The keyboard has a separate numeric keypad. To enable or disable the
numeric keypad, press the Num Lock key.
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