HP Probook 450 G9 Maintenance And Service Manual page 53

2. Remove the Phillips M2.0 × 2.5 screw (2), and then remove the WLAN module (3).
NOTE: Models have either one or two WLAN antennas. On models with two antennas, the #1 white
WLAN antenna cable connects to the WLAN module #1 Main terminal. The #2 black WLAN antenna cable
connects to the WLAN module #1 Aux terminal.
3. If the WLAN antenna is not connected to the terminal on the WLAN module, install a protective sleeve on
the antenna connector, as shown in the following illustration.
Reverse this procedure to install the WLAN module.
WLAN module 45