Lenovo ThinkPad X220 4298 User Manual page 152

10. Pivot the card until you can snap it into place by pressing the upper side of the connectors
secure the card with the screw
11. Connect the cables to the new PCI Express Mini Card. Be sure to attach the gray cable to the connector
marked "MAIN" or "M" on the card, and the black cable to the connector marked "AUX" or "A."
Note: If the new PCI Express Mini Card has three connectors, be sure to attach the gray cable to the
connector marked "TR1" on the card, and the black cable to the connector marked "TR2". If you attach
either cable to the center connector, the connection speed will be lower.
12. Reinstall the palm rest. For details, refer to the instructions in "Reinstall the palm rest" on page 122.
13. Reinstall the keyboard. For details, refer to the instructions in "Reinstall the keyboard" on page 118.
14. Reinstall the battery. For details, refer to the instructions in "Reinstall the battery" on page 116.
15. Turn the computer over again. Connect the ac power adapter and cables to the computer; then turn it on.
Replacing a PCI Express Mini Card with three connectors
1. Turn off the computer; then disconnect the ac power adapter and all cables from the computer. Wait for
a few minutes, till the inside of the computer cools, before you start the following procedures.
2. Close the computer display, and turn the computer over.
3. Remove the battery. For details, refer to the instructions in "Remove the battery" on page 116.
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User Guide
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