HP EliteBook 820 G1 Maintenance And Service Manual page 89

3. Remove the WWAN module (3) by pulling the module away from the slot at an angle.
NOTE:
If the WWAN antenna cables are not connected to the terminals on the WWAN module,
protective sleeves should be installed on the antenna connectors, as shown in the following illustration.
Reverse this procedure to install the WWAN module.
Component replacement procedures
ENWW 79