ESP32 CAM does not connect thru WiFi, but it does thru de Computer USB port.

[BugFinder]

Hi there, I have programmed four ESP32 CAM devices with different MAC addresses. I did this with my Arduino IDE. The ESP32 generates an unique IP address for every MAC address so the camera's can be retrieved independently by my application. Then I connect the camera's on a 7-ports hub to provide the power supply. I can then see three of the camera's in my ANGRY IP SCANNER. One NOT, but I can see it when I connect this camera directly to the computer's own USB port. So why can I not see this camera when is is connected to one of the hub ports? By the way, this happens also when I load the program with the same MAC address to another ESP32 CAM board. Has somebody a clue what this causes this behaviour and how I can solve this? Thanks, BugFinder.

[ESP_Sprite]

...I don't get your logic. The ESP32 chips already come with an unique MAC address burned in eFuses; why do you feel the need to put your own in? Aside from that, we can't really say anything about this until you give more details: e.g. the code you use as well as the MAC addresses you generated would be useful.