WWAN module
Description Spare part number
HP lt4120 LTE/EVDO/HSPA+ Gobi 4G Mobile Broadband Module 800870-002
Fibocom HP hs3210 WW HSPA+ w/o GPS 918670-852
Huawei HP It4132, LTE/HSPA+ 4G w/GPS M.2 918671-852
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 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 bottom cover (see Bottom cover on page 36).
5. Disconnect the battery (see Battery on page 37).
Remove the WWAN module:
1. Disconnect the WWAN antenna cables (1) from the terminals on the WWAN module.
NOTE: The WWAN antenna cable labeled “5” connects to the “Main” terminal labeled “5”. The WWAN
antenna cable labeled “6” connects to the “Aux/GPS” terminal labeled “6”.
2. Remove the Phillips PM2.0×3.25 screw (2) that secures the WWAN module to the system board. (The
WWAN module tilts up.)
Component replacement procedures 43
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