Usually you will have to set an IP on the LAN connector if you are trying to connect to an NVRs POE ports. The wireless should always connect to your LAN and get an address from your LAN router. In a perfect world - all you need to do then is connect the cable to the NVR ports and it 'should' get an address from the NVR POE switch. This doesn't always happen though, so sometimes it is necessary to go to properties of the wired LAN adapter and manually set an address that will work in the NVRs POE IP range. Once that is done, you will be able to connect to the Internet via the wireless and to the NVR via cable simultaneously. (sounds like Voodoo, but it works!)
The only caveat is = the two networks must have different IP address ranges. (which they should by default, because the NVR LAN and POE ports need to be different ranges to work correctly.)
EX. = if your LAN is set to 192.168.1.xxx the POE needs to be set 192.168.2.xxx or even 10.1.1.xxx - no specific address range as long as the two both 'private range' addresses and are different.
Private range address =
Class A = 10.0.0.0 ~ 10.255.255.255 *any IP address starting a 10
Class B = 172.16.0.0 ~ 172.31.255.255 *any IP with 172.16.xxx.xxx through 172.31.xxx.xxx
Class C = 192.168.0.0 ~ 192.168.255.255 * any IP with 192.168.xxx.xxx
Ted