Specifications

Bottom components
Item Component Function
(1) Battery bay Holds the battery.
(2) Docking connector (select models only) Connects an optional docking device.
(3) Battery latches (2) Release the battery from the battery bay.
(4) Vents (5) Enable airflow to cool internal components.
NOTE: The computer fan starts up automatically to cool
internal components and prevent overheating. It is normal for the
internal fan to cycle on and off during routine operation.
(5) Accessory battery connector Connects an optional accessory battery.
(6) Hard drive bay Holds the hard drive.
(7) Bluetooth module compartment (select models
only)
Contains a Bluetooth device.
(8) Memory module compartment Contains the memory module slot.
(9) WLAN module compartment Contains the WLAN module slot.
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
technical support through Help and Support.
14 Chapter 2 External component identification