Lenovo ThinkPad X1 Extreme Gen 5 Hardware Maintenance Manual page 91

For wireless WAN model, when installing:
• Ensure that you install the buzzer at the backside of the system board.
• Ensure that you install the PCH mylar, memory module mylars, coin-cell battery mylar and wireless WAN
card gasket as shown below.
• Ensure that you attach the wireless WAN card thermal pad and M.2 solid-state drive thermal pad as
shown below and then remove the dust protection film of the thermal pad. For more information about
how to attach M.2 solid-state drive thermal pad, see "1100 M.2 solid-state drive" on page 73.
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Chapter 8 Removing or replacing a FRU
85