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WWAN module
Description Spare part number
HP un2420 Broadband Module for use in all countries and regions 531993-001
HP hs2330 HSPA Mobile Broadband Module for use in all countries and regions 574249-001
HP hs2320 HSPA Mobile Broadband Module for use only in Europe, the Middle East, and Africa
NOTE: For use only on selected computer models.
574248-001
CAUTION: The WWAN module and the WLAN module are not interchangeable.
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.
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 44).
5. Remove the wireless module compartment cover (see
WLAN module on page 53).
Remove the WWAN module:
1. Disconnect the WWAN antenna cables (1) from the terminals on the WWAN module.
NOTE: 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.
2. Remove the two Phillips PM2.5×6.0 screws that secure the WWAN module to the computer (2).
(The edge of the module opposite the socket rises.)
Component replacement procedures 57