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About your last point: The Switch could have independent power supply so no need for a PoE powered by the NVR. Why would the Switch for Camera # B need to connect to both the NVR and the Modem/Router? All your answers very-very comprehensive. Thanks a lot!!!

Hi all, I have been searching through the network topology posts for NVRs and have seen answers to sporadic questions but I still don't have a full picture so I created my own to ask the question and please excuse if these are basic. In the picture, I understand that the NVR will be able to...

I understand that there are starlight models of the Chinese cameras...

I have a question in response to the warnings on Chinese versions of Dahua. Say I buy a couple and I use them using Blue Iris. Does it matter even if I upgrade them and they revert to the chinese version given I am accessing them through an English version of Blue Iris?

Thanks for the response Why are turrets better than bullets?

Hi all, I am looking to buy a couple of dahua bullet IP cameras. I have narrowed it down to these 4: IPC-HFW4431R-Z IPC-HFW4431M-I2 HFW4433F-ZSA IPC-HFW4431T-ASE but (A) don't understand which is better and why. Can you advise me? (B) I noticed that the audio in/out has a dedicated...