NOTE: Solid-state drives are designed with a notch to prevent incorrect insertion.
WWAN module
To remove the WWAN module, use this procedure and illustration.
Table 6-7 WWAN module descriptions and part numbers
Description Spare part number
Qualcomm Snapdragon X55 LTE + 5G M54570-005
Qualcomm Snapdragon X20 LTE - Advanced Pro (Cat16) M54571-005
IMPORTANT: 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. Prepare the computer for disassembly (see Preparation for disassembly on page 28).
2. Remove the pen (see Pen on page 28).
3. Remove the bottom cover (see Bottom cover on page 30).
4. Disconnect the battery cable from the system board (see Battery on page 31).
5. Remove the heat sink (see Heat sink on page 36).
Remove the WWAN module:
1. Carefully disconnect the antenna cables from the module (1).
NOTE: Be sure to save the foam that is removed when you disconnect the antennas and replace it on
the antennas when installing a WWAN module.
Component replacement procedures 39
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