HP EliteBook 8440W Maintenance And Service Manual page 59

Remove the WWAN module:
Ä CAUTION: To prevent an unresponsive system, replace the wireless module only with a wireless module authorized for use in the
computer by the governmental agency that regulates wireless devices in your country or region. If you replace the module and
then receive a warning message, remove the module to restore computer functionality, and then contact technical support through
Help and Support.
1. Position the computer upside down, with the front toward you.
2. Disconnect the WWAN antenna cables 1 from the terminals on the WWAN module.
✎
The WWAN antenna cables are labeled: 5 - red, and 6 - blue. Connect the antenna cables to the matching
transmit/receive connector on the WWAN module.
3. Remove the 2 Phillips PM2.5×4.0 screws 2 that secure the WWAN module to the computer. The WWAN
module tilts up with the screws removed.
4. Remove the WWAN module 3 by pulling it away from the slot at an angle.
✎
WWAN modules are designed with a notch 4 to prevent incorrect insertion of the WWAN module into
the WWAN module slot.
Reverse this procedure to install the WWAN module.
Maintenance and Service Guide
Removal and replacement procedures
4–15