HP 8510w Maintenance And Service Manual page 72

Remove the WWAN module:
1. Disconnect the WWAN antenna cables (1) from the terminals on the WWAN module.
NOTE:
The blue WWAN antenna cable is connected to the WWAN module "Aux" terminal.
2. Remove the two Phillips PM2.5×4.0 screws (2) that secure the WWAN module to the computer.
(The edge of the module opposite the slot rises away from the computer.)
3. Remove the WWAN module (3) by pulling the module away from the slot at an angle.
NOTE:
Reverse this procedure to install the WWAN module.
62 Chapter 4 Removal and replacement procedures
The red WWAN antenna cable is connected to the WWAN module "Main" terminal.
WWAN modules are designed with a notch (4) to prevent incorrect installation.