HP EliteBook 840 G1 Service Manual page 71

3. Remove the WWAN module (3) by pulling the module away from the slot.
NOTE: WWAN modules are designed with a notch to prevent incorrect insertion.
NOTE:
If the WWAN antennas are not connected to the terminals on the WWAN module,
the protective sleeves must be installed on the antenna connectors, as shown in the following
illustration.
Reverse this procedure to install the WWAN module.
Component replacement procedures
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