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WWAN module
NOTE: The WWAN module and the WLAN module are not interchangeable.
Description Spare part number
HP lt2523 LTE/HSPA+ Mobile Broadband Module 675793-001
HP lt2522 LTE/EV-DO Mobile Broadband Module 675791-001
HP un2430 EV-DO/HSPA Mobile Broadband Module 634400-001
HP hs2350 HSPA+ Mobile Broadband Module 668969-001
HP un2430 EV-DO/HSPA Mini Card 702080-001
HP hs2350 hspa+ Mobile Broadband Module 710788-001
HP lt2522 LTE/EV-DO Mobile Broadband Module 710789-001
HP lt2523 LTE/HSPA+ Mobile Broadband Module 710790-001
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 battery (see
Battery on page 40).
5. Remove the hard drive cover (see
Hard drive cover on page 45).
6. Remove the service cover (see
Service cover on page 51).
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.)
54 Chapter 4 Removal and replacement procedures