HP Compaq 6520s Maintenance And Service Manual page 52

Remove the WLAN module:
1. Position the computer with the front toward you.
2. Loosen the Phillips PM2.0×5.0 captive screw (1) that secures the WLAN module compartment
cover to the computer.
3. Lift the right side of the WLAN module compartment cover (2), swing it to left, and remove the
cover. The WLAN module compartment cover is included in the Plastics Kit, spare part number
456614-001.
4. Disconnect the WLAN antenna cables (1) from the terminals on the WLAN module.
NOTE:
The white WLAN antenna cable is connected to the WLAN module "Aux" terminal.
5. Remove the two Phillips PM2.5×4.0 screws (2) that secure the WLAN module to the computer.
(The edge of the module opposite the slot rises away from the computer.)
6. Remove the WLAN module (3) by pulling the module away from the slot at an angle.
NOTE:
42 Chapter 4 Removal and replacement procedures
The black WLAN antenna cable is connected to the WLAN module "Main" terminal.
WLAN modules are designed with a notch (4) to prevent incorrect installation.