Getting Started HP Notebook - Windows 7

Component Description
(9)
Service door Provides access to the hard drive bay, the wireless
LAN (WLAN) module slot, the WWAN module slot, and
the memory module slots.
CAUTION: 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 support through Help and Support.
(10) Accessory battery connector Connects an optional accessory battery.
18 Chapter 2 Getting to know your computer