I have a Laview NVR set up. Ethernet port of NVR is connected to a powerline adapter. Everything works fine. I want to put another camera in the garage. The NVR is on the 2nd floor. I don't want to run Cat5 cable from garage to the 2nd floor. I thought that I could plug the camera into an powerline adapter and have the NVR recognize the camera. However, I tried 2 adapters (that works for Roku) and it seem to not recognize the camera because the network lights aren't on. I'm I doing something wrong or would I require a PoE switch? The 2 adapters that I tried are: Zyxel PLA-401 and PLA-407. TIA.