@looney I read the post about the sd cards but id rather spend the money to have the working nvr already in the beginning. It will facilitate having everything set up now and just adding cameras in the future as my budget allows. I just need help choosing the nvr now. I think ill be able to start with 2 cameras, nvr,+hdd, and poe injector close to my budget. The nvr i listed is the cheapest lineup in the ali express store.If i went with the nvr416-4ks2 model then id also have to purchase the poe switch. The ali express store only offers an 8ch poe switch so im looking elsewhere. I was looking at this model on amazon for the poe switch.