Lenovo ThinkPad X240 User Manual page 102

9. Pivot the new wireless-LAN card downward 1 and then install the screw to secure the card in place 2 .
10. Connect the antenna cables to the new wireless-LAN card. Ensure that you attach the gray cable to the
main connector on the card, and the black cable to the auxiliary connector on the card.
11. Reinstall the base cover assembly.
12. Reinstall the battery pack. See "Replacing the battery pack" on page 75.
13. Turn the computer over again. Connect the ac power adapter and all cables.
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User Guide