... -RW 4.USB Backup,SATA port 5.IN:16Ch Video 8-Channel Standalone DVR AST-DVR0804LBH.264 Algorthm, Pentaplex, Support Internal CD ... , on-line user etc.VideoVideo Input4/8/16 channel, BNC, 1.0Vp-p, 75?, looping(optional)Video Output2 channel TV output, BNC, 1.0Vp ... - p, 75?, 1 VGA output, matrix output(optional) (DVR0404LN-S PLUS ...