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WWAN module
Description Spare part number
HP hs3120 HSPA+ Mobile Broadband Module 714653-005
HP hs3121 HSPA+ Mobile Broadband Module 696218-005
HP hs3124 HSPA+ Mobile Broadband Module 714655-005
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. Turn off 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 the power from the computer by unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the display assembly (see
Display assembly on page 26).
Remove the WWAN module:
1. Disconnect the battery cable from the system board.
2. Disconnect the GPS module antenna cable (1) from the WWAN module “Aux” terminal.
3. Disconnect the WWAN antenna cable (2) from the WWAN module “Main” terminal.
4. Remove the two Phillips PM1.4×2.3 screws (3) that secure the communications bracket to the
system board.
34 Chapter 4 Removal and replacement procedures