Dell Latitude E6220 (Mid 2011) - Manual (Page 70)

opening in the computer. Pull the antenna cables out from the bottom
chassis.
6. Turn over the computer. Connect the wireless antenna cables to their
respective modules.
7. Replace and tighten the screws on the bottom chassis.
8. Install the keyboard.
9. Install the palm rest.
10. Install the base cover.
11. Install the battery.
12. Follow the procedures in After Working Inside Your Computer.
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