Lenovo ThinkPad T540p (English) User Guide - Page 100

and then remove the small bottom cover, Loosen the screw

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Attention: Before you start installing a wireless WAN card, touch a metal table or a grounded metal object. This action reduces any static electricity from your body. Static electricity could damage the card. Your computer might be equipped with a wireless WAN card. To replace the wireless WAN card, doing the following: 1. Turn off the computer; then disconnect the ac power adapter and all cables from the computer. Wait three to five minutes to let the computer cool. 2. Close the computer lid and turn the computer over. 3. Remove the battery pack. See "Replacing the battery pack" on page 69. 4. Loosen the screw 1 , and then remove the small bottom cover 2 . 5. If a tool is provided with the new wireless WAN card to help you disconnect cables, use the tool to disconnect the cables from the wireless WAN card. If no such a tool is provided, hold the cable connector with your fingers and gently disconnect each cable from the wireless WAN card. 84 User Guide

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Attention:
Before you start installing a wireless WAN card, touch a metal table or a grounded metal object.
This action reduces any static electricity from your body. Static electricity could damage the card.
Your computer might be equipped with a wireless WAN card. To replace the wireless WAN card, doing
the following:
1. Turn off the computer; then disconnect the ac power adapter and all cables from the computer. Wait
three to five minutes to let the computer cool.
2. Close the computer lid and turn the computer over.
3. Remove the battery pack. See “Replacing the battery pack” on page 69.
4. Loosen the screw
1
, and then remove the small bottom cover
2
.
5. If a tool is provided with the new wireless WAN card to help you disconnect cables, use the tool to
disconnect the cables from the wireless WAN card. If no such a tool is provided, hold the cable
connector with your fingers and gently disconnect each cable from the wireless WAN card.
84
User Guide