Using Keypads; Using The Embedded Numeric Keypad - HP COMPAQ 309971-002 Hardware Manual

Pointing Devices and Keyboard

Using Keypads

The notebook has an internal numeric keypad and supports an
optional external numeric keypad or an optional external
keyboard that includes a numeric keypad.

Using the Embedded Numeric Keypad

The 15 keys of the embedded numeric keypad can be used like
the keys on an external keypad. When the internal keypad is
turned on, each key on the internal keypad performs the functions
indicated by the icon in the upper right corner of the key.
Embedded numeric keypad components
Component
1
Num lock light
2
Num lk key
3
Embedded numeric keypad
4
Fn key
2–10 Hardware Guide