HP compaq Hardware Manual page 8

Notebook Features
Pointing Device Components (Continued)
Item Component
3
TouchPad
4
Left and right TouchPad
buttons
1–2
Description
Moves the pointer and selects or
activates items on the screen. Can be
set to perform other mouse functions,
such as scrolling and double-clicking.
Function like the left and right buttons
on an external mouse.
Hardware Guide