HP EliteBook 8570p Maintenance And Service Manual page 27

Item Component
(3) num lock
(4) Integrated numeric keypad
key
Description
Turns the embedded numeric keypad on and off when
pressed in combination with the
Alternates between the navigational and numeric
functions on the integrated numeric keypad.
When num lk has been enabled, the keys can be used
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 lk key.
fn key.
Keys
19