Four-Camera NVR The Plustek NVR 4000 is a network video recorder which enables users to connect four IP cameras into one hub that can record and store the video streams for easy retrieval for up to 14 days. The included NVR Multi-Manager software enables users with multiple cameras to view up to 16 channels of surveillance images on a single screen. Now with megapixel camera support, the unit enables the user to zoom in and closely follow changing details in a video stream.