HP EliteBook 840 G2 Notebook PC Maintenance And Service Manual page 69

3. Remove the WWAN module (3) by pulling the module away from the slot at an angle.
NOTE:
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.
ENWW
WWAN modules are designed with a notch to prevent incorrect insertion.
Component replacement procedures 59