Lenovo ThinkPad X220 4298 User Manual page 148

7. Attach the side spacer rails to a new hard disk drive.
8. Insert the solid state drive into the hard disk drive bay, then press it firmly into place.
9. Reinstall the cover of the bay
10. Reinstall the battery. For more information about how to reinstall the battery, refer to "Replacing the
battery" on page 116.
11. Turn the computer over again. Connect the ac power adapter and the cables to the computer.
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1 , then reinstall the screw 2 .