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Remove the WLAN module:
1. Position the computer with the front toward you.
2. Disconnect the WLAN antenna cables (1) from the terminals on the WLAN module.
NOTE: The WLAN antenna cables are numbered and connect from left to right on the WLAN
module.
3. Remove the two Phillips M2.0×2.0 screws (2) that secure the WLAN module to the system
board. (The WLAN module tilts up.)
4. Remove the WLAN module (3) by pulling the module away from the slot at an angle.
NOTE: WLAN modules are designed with a notch (4) to prevent incorrect insertion of the
WLAN module into the WLAN module slot.
Reverse this procedure to install the WLAN module.
WWAN module
Description Spare part number
HP un2430 EV-DO/HSPA Mobile Broadband Module 634400-001
HP hs2340 HSPA+ Mobile Broadband Module 632155-001
CAUTION: The WWAN module and the WLAN module are not interchangeable.
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 device functionality, and then contact technical support.
Component replacement procedures 49