HP Split 13 x2 PC Maintenance And Service Manual page 56

3. Remove the WWAN module (3) by pulling the drive 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.
48 Chapter 4 Removal and replacement preliminary requirements