Use a Phillips #0 screwdriver to remove the two 2.7 mm screws that secure the touchpad button board.

Use a spudger or a clean fingernail to flip up the locking flap on the ZIF connectors securing the two ribbon cables connected to the button board.

Once the flap is in the unlocked position, use tweezers or your fingers to gently pull the cable out of its socket by the tab.