HP EliteBook 840r G4 Maintenance And Service Manual page 52

4. Remove the WWAN module (3) by pulling the module away from the slot at an angle.
NOTE:
NOTE:
sleeves must be installed on the antenna connectors, as shown in the following illustration.
Reverse this procedure to install the WWAN module.
42 Chapter 5 Removal and replacement procedures for Customer Self-Repair parts
WWAN modules are designed with a notch to prevent incorrect insertion.
If the WWAN antennas are not connected to the terminals on the WWAN module, the protective