Wireless Wan Card (For Selected Models) - Lenovo ThinkPad X1 Extreme Gen 4 User Manual

Wireless WAN card (for selected models)

The following information is only for the computer with user-installable modules.
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.
Prerequisite
Before you start, read
Generic Safety and Compliance Notices
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 Fast Startup and the built-in battery" on page 37.
2. Turn off the computer and disconnect the computer from ac power and all connected cables.
3. Close the computer display and turn the computer over.
Removal procedure for wireless WAN card with four antennas
and print the following instructions.
Chapter 6
. 47
CRU replacement