Dell Vostro 14-3459 Owner's Manual page 14

3. Release the keyboard by prying on the keyboard release tabs using a scribe.
4. Slide and lift the keyboard to access the keyboard connector cable underneath [1,2].
5. Perform the following steps as shown in the illustration:
a. Lift the tab to release the cable from it's connector [1].
b. Disconnect the keyboard cable from the system board [2].
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