HP EliteBook 8470w Maintenance And Service Manual page 80

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