Lenovo ThinkPad L540 User Manual page 95

4. If your computer already is installed with a wireless WAN card, remove the card by doing Step 4 to 6.
If a tool is provided with the new card to help you disconnect cables, use the tool to disconnect the
cables from the old card. If no such a tool is provided, hold the cable connector with your fingers and
gently disconnect each cable from the old card.
5. Remove the screw. The card is released from the secured position and pivots upward.
6. Carefully remove the wireless WAN card out of the slot.
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Chapter 6 Replacing devices
79