There are 2 ZIF connectors near the top of the mainboard. The ZIF flap on the right has been opened. The ZIF flap is opened by pushing down in the direction of the orange arrow.

Unlatch both ZIF connectors and disconnect the cables. These cables lead to the front LED and IPD sensor, and proximity sensor.

Unplug the side WiFi antenna connector. See step 5 of the RDCC guide. To disconnect the cable, slide a thin, ESD-safe pry tool or tweezers under the metal neck of the connector and lift straight up from the board.

Unplug the cable leading to the USB Type-C port and headphone jack. See Step 4 of the RDCC Guide. Use the spudger to pry the press connector straight up.