Step 2. Install the 2280 M.2 solid-state drive in reverse order.
Wireless WAN card (for selected models)
Follow the instructions to replace the wireless WAN card.
The following information is only for the computer with user-installable modules. Ensure that you use only a
Lenovo-authorized wireless module specifically tested for this computer model. Otherwise, the computer will
generate an error-code beep sequence when you turn on the computer.
Before you start, read
Generic Safety and Compliance Notices and print the following instructions.
Attention: Do not touch the contact edge of the wireless WAN card. Otherwise, the wireless WAN card
might get damaged.
For access, do the following:
1. Disable the built-in battery. See “Disable the built-in battery” on page 31.
2. Turn off the computer and disconnect the computer from ac power and all connected cables.
3. Close the computer display and turn over the computer.
4. Remove the base cover assembly. See “Base cover assembly” on page 36.
Note: A plastic tape might cover the wireless WAN card connectors. To access the wireless WAN card, peel
off the tape first. Do not damage the tape and attach it in place after installation.
Step 1. Remove the wireless WAN card as shown below.
Chapter 6. CRU replacement 41
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