Lenovo ThinkPad L540 User Manual page 92

4. If you are installing a wireless LAN card, go to step 5. If you are replacing a wireless LAN card, do the
following to remove the old card first:
a. 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.
b. Remove the screw. The card is released from the secured position and pivots upward.
c. Carefully remove the wireless LAN card out of the slot.
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