HP Compaq 2510p Maintenance And Service Manual page 65

5. 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.)
6. Remove the WWAN module (1) by pulling the module away from the slot at an angle.
NOTE: WWAN modules are designed with a notch (2) to prevent incorrect installation.
Reverse this procedure to install the WWAN module.
Component replacement procedures 55