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@reigndropz
" I had purchased a Zmodo setup years ago and the DVR started failing so I wound up buying a Speco N16NXP thinking I could just swap out the unit because it is PoE but the cameras do not work. "
1) Indeed, many people get defrauded by Zmodo which has numerous times defrauded people with their "PoE" kits, which turn out to not be "PoE" by any meaningful PoE standards.
Zmodo / funlux are basically a bunch of scammers...
Note, from my notes which I wanted to share with others new to IP PoE security cameras: Please avoid the junk out there, it's worth spending more on a quality setup. How about a zmodo / annke / sannce / funlux "POE" system?: All of those brands seem to like to deceive customers into thinking...
ipcamtalk.com
Hi, It is important to share how some companies go out of their way to deceive and manipulate potential customers to buy crappy products. A great example of one such company are those behind Zmodo / Funlux brands. They imho are one of the worst. Here I illustrate a prime example of them...
ipcamtalk.com
So, you know now that the zmodo cameras you have are NOT PoE cameras.
OK, so now for more bad news...
2) The zmodo "
cat5e" cables suck. They're not good cables. You will need to replace them.
3) Good news, the Speco NVR you picked up, is a decent PoE standard Dahua OEM NVR.
Best to pair it with a Dahua OEM IP PoE camera(s) - do not get Chinese market models - look for international models, or USA models.
Look for member reviews of Dahua OEM cameras here, and see which cameras may work best for you.