HP PAVILION DM3 Maintenance And Service Manual page 20

Item
(5)
(6)
12 Chapter 2 External component identification
Component
Memory module compartment
Speakers (2)
Function
Contains the memory module slot (2 slots on select
models) and a wireless LAN module.
NOTE: To prevent an unresponsive system, replace
the wireless module only with a wireless module
authorized for use in the computer by the
governmental agency that regulates wireless devices
in your country or region. If you replace the module
and then receive a warning message, remove the
module to restore computer functionality, and then
contact technical support through Help and Support.
Produce sounds.