Lenovo ThinkPad Edge E420s User Manual page 108

5. If a tool for removing connectors is included in the package with the new card, use it to disconnect the
cables from the card. If no such tool is included, disconnect the cables by picking up the connectors
with your fingers and gently unplugging them.
Note: Depending on the system configuration of your computer, the card may have only one connector.
6. Remove the screws
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User Guide
1 . The card pops up 2 . Remove the card.