Long pins on the main board plug into the UI board and hold it in place.

With one hand, hold on to the main board.

Don't press the board down against your work surface, or you may damage the surface‑mounted components on the board.

With your free hand, grip the UI board by its edges and firmly pull it straight away from the main board to disconnect it.

Make sure the boards stay perpendicular to each other or the pins might get damaged.

During reassembly:

When pushing the UI board back into place, make sure the side opposite the sockets goes into its cutout on the main board. Otherwise, it will prevent the UI board from fully seating.