That statement makes no sense.
But I assume you are asking will it negotiate to gigabit or 100Mbit? Your cams will be 100M so it will run the links at 100M...which is the max. the cams can do and way more than enough.
The real question is can your cams handle PoE? Can you pls. post the specific models?
ReoLink RLC-410 and they are POE enabled, So would I just connect the Ethernet cord from the camera to the NVR and be done with it?