1.8-Channel Standalone DVR H.264 Algorthm,Pentaplex, Support Internal CD / DVD-RW ... ,4 Audio 3.OUT:1 VGA, 2 BNC 8-Channel Standalone DVR AST-DVR0804LB H.264 Algorthm, Pentaplex, Support Internal CD ... / USB CD/DVD-RW/ built-in SATA Burner/ Network downloadNetwork STANDALONE DVR AST-DVR0804LB