WWAN module
Description Spare part number
HP IT4211 LTE/EV-DO/HSPA+ 4G WWAN module 748021-001
ME906E LT4112 LTE/HPSA+ WWAN module 740011-001
MU736 HS3110 GEN HSPA+ M.2 WWAN module 748599-001
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.
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 45).
5. Remove the service cover (see Service cover on page 47).
Remove the WWAN module:
1. Disconnect the WWAN antenna cables (1) from the terminals on the WWAN module.
NOTE: The red WWAN antenna cable connects to the WWAN module “5/Main” terminal. The blue
WWAN antenna cable connects to the WWAN module “6/Aux” terminal.
2. Remove the Phillips PM2.0×3.0 screw (2) that secures the WWAN module to the system board. (The
WWAN module tilts up.)
Component replacement procedures 53
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