DVRDeal 8 Channel Security System Kit 700 TVL Night Vision Infrared Security Cameras high resolution outdoor&indoor weatherproof Cameras (750GB HDD Installed) Type: Standalone DVR Video Input: BNC x 8 Video Output: BNC x 1, VGA x 1 Audio Input: RCA x 2 Audio Output: RCA x 1 Backup Device: USB Network Connection: RJ45 Bundled Camera Number: 4