HP Probook 5310m Maintenance And Service Manual page 54

Removal and replacement procedures
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 with the front toward you.
2. Disconnect the WWAN antenna cables 1 from the terminals on the WWAN module.
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The red WWAN antenna cable is connected to the WWAN module "Main" terminal. The blue WWAN
antenna cable is connected to the WWAN module "Aux" terminal.
3. Remove the two Phillips PM2.5×4.0 screws 2 that secure the WWAN module to the system board.
(The WWAN module tilts up.)
4. Remove the WWAN module 3 by pulling it away from the slot at an angle.
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WWAN modules are designed with a notch 4 to prevent incorrect insertion of the WWAN module into
the WWAN module slot.
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