WWAN module
NOTE: The WWAN module and the WLAN module are not interchangeable.
Description Spare part number
HP lt4112 LTE/HSPA+ Mobile Broadband Module 740011-001
HP lt4211 LTE/EV-DO/HSPA+ Gobi 4G Module 793116-001
HP hs3110 HSPA+ Mobile Broadband Module 822828-001
Before removing the WWAN module, follow these steps:
1. Turn o the computer. If you are unsure whether the computer is o 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 battery (see Battery on page 29).
5. Remove the hard drive cover (see Hard drive cover on page 32).
6. Remove the service cover (see Service cover on page 38).
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 PM2.0×3.0 screws (2) that secure the WWAN module to the system board. (The
WWAN module tilts up.)
Component replacement procedures 41
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