Lenovo ThinkCentre M90n-1 Hardware Maintenance Manual page 79

4. Install the wireless WAN card.
5. Attach the absorber and the thermal pad to the wireless WAN card.
6. Reinstall all removed parts.
7. Reconnect the external cables and power adapter to the corresponding connectors on the computer,
and then reconnect the power cord to the electrical outlet.
Note: If a locking device is available, use it to lock the computer.
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Chapter 6 Hardware removal and installation
73