ANNKE 16 Channel H.265+ 4K Ultra HD PoE NVR, Works with Alexa - ANNKE Store
Amazon.com : ONWOTE 16 Channel H.265 4K PoE Security NVR Video Audio Recorder, Support 8MP 5MP 4MP 1080P, 16CH NVR with NO Hard Drive, Support up to 16TB with 2 Storage Bays,
Vikylin NVR DS 7616NI I2/16P 16CH 12MP Video Recorder For IP Camera 16 PoE Ports Plug &Play 2 SATA Interfaces Original Upgrade|Surveillance Video Recorder| - AliExpress