A small flex / PCB board with a USB Type‑C port mounted at one end.
On the board you can find solder pads/traces that connect to the mainboard.
The port’s casing is metal (often silver / nickel plated).
Additional components like the microphone and connectors (for audio / speaker / bottom assembly) are often integrated onto the same flex.
One listing explicitly states the flex “also includes bottom microphone and handsfree connector.”
