In the first picture, a connection may be seen with the black cable connecting the external antenna connector to the internal logic board (PCB) via U.FL connectors. The connectors on the ends of the cable are circled in red.

In the second picture, a connection may be seen with the with the gray cable connecting the external antenna connector to the internal logic board (PCB) via U.FL connectors. The connectors on the ends of the cable are circled in red.