Bottom - HP ProBook 640 G1 Maintenance And Service Manual

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Component
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20 Chapter 2 External component identification
Service cover
Battery release latch
SIM slot
Docking connector
Service cover release lock
Description
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
HP Support Assistant. To access HP Support Assistant on
the Start screen, select the HP Support Assistant app.
Releases the battery.
Supports a wireless subscriber identity module (SIM)
(select models only). The SIM slot is located inside the
battery bay.
Connects an optional docking device.
Locks the service cover.