... Standalone DVR H.264 Algorthm,Pentaplex, Support Internal CD / DVD-RW 2.IN:16 Ch Video,4 Audio 3.OUT:1 ... AST-DVR0804LB H.264 Algorthm, Pentaplex, Support Internal CD / DVD-RW , USB Backup, SATA portIN:16 Ch Video,4 Audio;OUT ... screen during playbackBackup ModeFlash disk/ USB HDD/ USB CD/DVD-RW/ built-in SATA Burner/ Network downloadNetwork STANDALONE DVR AST-DVR0804LB ...