Now from my experience when a camera is connected at the LAN side of the NVR (i.e. not connected at the NVR PoE switch) it appears at the end of the camera list of the NVR interface. So according to my experiene and according to your last picture your new 4MP camera seems to be connected at the LAN side of the NVR. Also if your new 4MP camera has DHCP enabled and it is connected at your LAN, then your LAN router assign the new camera the 192.168.1.63 IP, which is also in line with your picture. SO where have you connected the new 4MP camera? No. The new camera is connected to the POE port. The .63 address is one (of many) I created using SADP for testing. DHCP in the camera was disabled. Therefore if all fails, ensure that your new 4MP camera has a fixed IP 192.168.1.4 (i.e. disable the camera DHCP from the camera menus) and connect it at the NVR PoE switch. If that does not work, also configure manually the third camera port at the NVR with the same settings (IP, gateway, mask, password) as the new 4MP camera. I tried this. I used SADP to set the camera to 192.168.1.4 (DHCP disabled). Result: When connected to the NVR, nothing happens. The camera is not seen nor installed. Here is a note: I changed the new camera to a 0.47 address in SADP with DHCP ENABLED. When connected to the NVR, it showed up (but not installed) with an IP of 169.254.100.117. I don't know where that IP came from. On a side note, the PoE switch inteface gateway IP is defined in the "PoE Setup" menu of your first picture. I hope I am right. Please confirm. Also please confirm if you have the Virtual host feature and if you have two SATA interfaces. No, the POE Setup page only shows the watts being used by each port and POE can be turned off for each port. I do have the "Virtual Host" feature but I am not using it. (I have no idea what it is). I just turned it on. But I don't see any changes. Yes, I have two SATA interfaces -- and two SATA drives installed. Have you managed to login properly to your new 4MP camera from an isolated LAN? I initially did login directly to the 4MP camera using Chrome. I entered the 12345 password and was immediately required to change the password -- which I did. But I have not been able to login to the camera via a browser since I did that. I never get the login screen -- just "connection not found" no matter what IP I set on the camera. When you updated your NVR firmware, did you define a new password for each of the old cameras in the NVR camera list? No. I was not asked to do that. In other words, how did the new NVR firmware changed the old cameras IPs? I don't know. It seemed like a miracle. (The NVR probably just used the old default pw. I did notice that with the new firmware, there are warning messages about the cameras having weak passwords -- but I have not changed them in the old cameras.) Why this procedure does not work in the new 4MP camera? I don't know. That's part of the reason I'm here. Another idea would be to remove the old two cameras and connect only the new 4MP camera. Now that you undestand better how the NVR network configuration works, concentrate your trials only at the new camera and use the old cameras in order to confirm whatever changes you make, if they fail with the new camera, if they work with the old cameras. I tried that. But still couldn't get the new camera working. I would very much like to know if ANYONE has been able to use a 4MP camera with a HIKvision NVR.