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4. Locate the Wi-Fi card. See "Computer components" on page 31.
5. Disconnect the two Wi-Fi antenna cables from the Wi-Fi card, and then remove the screw that secures
the Wi-Fi card so that the Wi-Fi card pops up.
Figure 41. Disconnecting cables and releasing the Wi-Fi card
6. Remove the Wi-Fi card from the M.2 Wi-Fi card slot as shown.
Figure 42. Removing the Wi-Fi card
7. Insert the new Wi-Fi card into the M.2 Wi-Fi card slot at an angle of about 20 degrees. Then, pivot the
Wi-Fi card downward so that the screw hole in the Wi-Fi card is aligned with the corresponding hole
in the mounting stud.
Figure 43. Installing the Wi-Fi card
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Lenovo S400z and S405z Hardware Maintenance Manual
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