Lenovo 20EQS1LG00 User Manual page 148

2. Insert the keyboard into the keyboard bezel as shown. Ensure that the front edge of the keyboard (the
edge that is close to the computer display) is under the frame of the keyboard bezel.
3. Slide the keyboard as shown by the arrows. Ensure that the latches are hidden under the keyboard bezel.
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ThinkPad P50 User Guide