What are camera port protectors?
Port protectors, as the name implies, protect the camera while tethered via cables. Camera ports are often left open while in use. The position of the port leaves the cables hanging onto the side, which is not the ideal position. This is where a camera port protector comes in.
When left tethered, a port protector keeps the cables snug and connected on the side. It prevents accidental disconnection that may lead to failure of recording.
Besides, using a port protector maintains the ports in top shape. The small cable wiggles that happen when left unprotected may break the cable ports. It may loosen in the long run or worse, it would break totally.