Dell Inspiron PP23LA Owner's Manual page 19

K E Y B O A R D A N D W I R E L E S S S T A T U S L I G H T S
The green lights located above the keyboard indicate the following:
Turns on when the numeric keypad is enabled.
9
Turns on when the uppercase letter function is enabled.
A
Turns on when the scroll lock function is enabled.
Turns on when wireless networking is enabled. To enable
or disable wireless networking, press <Fn><F2>.
About Your Computer
19