HP H6T95AA#ABA, H6V04AA#ABA manual 40

Component	Description
num lock key	Controls the function of the integrated numeric keypad. Press the
	key to alternate between the standard numeric function found on
	an external keypad (this function is turned on at the factory) and
	the navigational function (indicated by the directional arrows on
	the keys).
	NOTE: The keypad function that is active when the computer is
	turned off is reinstated when the computer is turned back on.
Integrated numeric keypad	Set at the factory to function like an external numeric keypad. To
	alternate between this numeric function and the navigational
	function (indicated by the directional arrows on the keys), press
	the num lock key.

34 Chapter 5 Navigating using the keyboard and pointing devices