HP Pavilion dm4-3013cl Entertainment Notebook PC - Manual (Page 41)

Icon Key Description
f9 Decreases speaker volume incrementally as long as you hold down the key.
f10 Increases speaker volume incrementally as long as you hold down the key.
f11 Mutes or restores speaker sound.
f12 Turns the wireless feature on or off.
NOTE: A wireless network must be set up before a wireless connection is possible.
Using the keyboard 31