Lenovo 20JD, User Manual, Page: 115 / 150

6. Install a new wireless-WAN card by doing the following:
a. Align the contact edge of the new wireless-WAN card with the key in the slot. Then carefully insert
the card into the slot at an angle of about 20 degrees 1 . Pivot the card downward 2 .
b. Install the screw to secure the wireless-WAN card in place 3 .
c. Connect the cables to the wireless-WAN card 4 . Ensure that you attach the red cable to the main
connector and the blue cable to the auxiliary connector on the card.
d. Cover the wireless-WAN card with the film
5
(if available).
7. Reinstall the base cover assembly.
8. Turn the computer over. Connect the ac power adapter and all cables to the computer.
Replacing the M.2 solid-state drive
Before you start, read “Important safety information” on page v and print the following instructions.
Attention: The M.2 solid-state drive is sensitive. Inappropriate handling might cause damage and
permanent loss of data.
When handling the M.2 solid-state drive, observe the following guidelines:
• Replace the M.2 solid-state drive only for upgrade or repair. The M.2 solid-state drive is not designed
for frequent changes or replacement.
• Before replacing the M.2 solid-state drive, make a backup copy of all the data that you want to keep.
• Do not apply pressure to the M.2 solid-state drive.
• Do not touch the contact edge of the M.2 solid-state drive. Otherwise the M.2 solid-state drive might get
damaged.
• Do not make the M.2 solid-state drive subject to physical shocks or vibration. Put the M.2 solid-state
drive on a soft material, such as cloth, to absorb physical shocks.
To replace the M.2 solid-state drive, do the following:
Chapter 9
.
Replacing devices
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