This product is either discontinued or we cannot get that from suppliers.
Dahua DHI-NVR4216-16P-4KS2-6TB, 16-Channel, 1U 6TB 4K 16-PoE Lite Network Video Recorder, Processor Quad-Core Embedded, Max Resolution 8MP 4K (3840x2160) 30fps, Encoding H.264/H.264+, H.265/H.265+, Recording 200Mbps, Storage 2x SATA III Ports (1x 6TB HDD), Interface 1x HDMI, 1x VGA, 1x USB 3.0, 1x USB 2.0, 1x RJ45 (10/100/1000Mbps), 1x 1-Channel RS232, 16x PoE Ports, 2x RCA (In/Out).
Dahua NVR4000-4KS2 is introduced as the first Lite series NVR that supports for 4K and H.265 encoding technology with excellent performance.