2x Reolink PoE CCTV Security Camera 5MP Outdoor Home Surveillance IP Camera 520A

Answer 1: Hardware version which supports RLC-520A: Reolink 8CH NVR: N2MB02. Reolink 16CH NVR: H3MB18. You can verify the compatibility via System Information of the NVR. It is the best choice for DIY enthusiasts.