Night Owl B-A720-81-4 8 Channel Smart HD Video Security System w/ 1TB HDD and 4 x 720p AHD Cameras Type: Kit Solution Video Input: BNC x 8 Video Output: 1 x VGA, 1 x HDMI Audio Input: RCA x 4 Audio Output: RCA x 1 Recording Mode: Motion Activated, Continuous, Time Schedule Storage Capacity: 1 x 4TB (1TB Pre-installed) Backup Device: USB 2.0(USB Flash Drive, USB HD)