HP ProBook 6455b, 6555b, 6450b and 6550b Notebook PCs Maintenance and Service Guide

Bottom components
Item Component Description
(1) Battery bay Holds the battery.
(2) SIM slot Contains a wireless subscriber identity module (SIM)
(select models only). The SIM slot is located inside the
battery bay.
(3) Battery release latch Releases the battery from the battery bay.
(4) Docking connector Connects an optional docking device.
(5) Accessory battery connector Connects an optional accessory battery.
(6) Vents (6) 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.
(7) Hard drive bay Holds the hard drive.
(8) Memory module compartment Contains an expansion memory module slot.
30 Chapter 2 External component identification