Lenovo ThinkPad T420 User Manual page 149

4. Remove the keyboard. For more information about how to remove the keyboard, refer to "Replacing
the keyboard" on page 119.
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.
6. Remove the screw (1). The card pops up (2).
.
Chapter 6 Replacing devices
131