NVR OEM Version from DS 7604NI K1/4P Hikvision 4CH POE 8MP 4K Record for POE Camera Security Network Video Recorder|Surveillance Video Recorder| - AliExpress
Hikvision DS-7604NI-K1 4Ch IP NVR 4K - Online CCTV Market
IP DVR DS-7604NI-K1(B) 4 CHANNELS Hikvision - 4-channel - Delta