WWAN module
NOTE: This section applies only to computer models equipped with an Intel processor.
Description Spare part number
HP un2420 EV-DO/HSPA Mobile Broadband Module 531993-001
HP hs2340 HSPA+ Mobile Broadband Module 632155-001
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 device functionality, and then contact technical support.
Before removing the WWAN module, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet
and then unplugging the AC adapter from the computer.
4. Remove the battery (see
Battery on page 41).
5. Remove the memory module/wireless module compartment cover (see
WLAN module
on page 44).
Remove the WWAN module:
1. Disconnect the WWAN antenna cables (1) from the terminals on the WWAN module.
NOTE: The red WLAN antenna cable is connected to the WWAN module #1 terminal. The blue
WWAN antenna cable is connected to the WWAN module #2 terminal.
2. Remove the two Phillips PM2.0×3.0 screws (2) that secure the WWAN module to the
system board. (The WWAN module tilts up.)
Component replacement procedures
47
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General
Weight and Dimensions
