HP ProBook 4310s Maintenance And Service Manual page 67

Removal and replacement procedures
6. Lift the rear edge 1 of the keyboard until it rests at an angle.
7. Slide the keyboard 2 back until it rests on the switch cover and display.
8. Release the zero insertion force (ZIF) connector 1 to which the keyboard cable is attached, and then
disconnect the keyboard cable 2 from the system board.
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