Left Joy-Con 2 Board Installation

Lower the board into the controller at an angle so it sits underneath the locking tab on the controller's inner edge.

Use a spudger to bend the joystick's ribbon cable so it's perpendicular with the joystick.

Lower the board so the joystick's ribbon cable routes through the joystick cut-out in the board.

Push the board towards the controller's inner edge (the side with the shoulder buttons) to prevent it from colliding with the joystick module.

Lower the board into the frame.

Use your finger or the flat end of a spudger to press the black tape onto the back of the joystick module.

Use a JIS 00 driver to install the five 3.1 mm‑long black screws securing the board to the controller.

Make sure the locking flap is flipped up on the joystick cable ZIF connector.

Insert the joystick ribbon cable into its ZIF connector until it's fully seated.

Use your finger or a spudger to flip the locking flap down to secure the cable.