Maximum Cameras that fit in XavierNX

In order to maximize the performance of the NX, I want to ask the question below.
How many FHD Cameras can the NX hold?

Here are the conditions of use.
-FHD(1920x1080)resolution@60Hz cameras working simultaneously.
-I/O that are able to be used are USB3.1(WebCam), MIPI/CSI(CMOS Camera), RJ-45(IP Camera).
-At least one camera will have the AI models (YOLO) running (Other cameras can just be for video recording)

If more detailed condition of use are needed, please let us know.

Thank you

Suppose can support to 6 cameras