... .Support Internal CD / DVD-RW 4.USB Backup Standalone DVR AST-DVR0404LN 4-Channel Standalone DVR H.264 Algorthm, Pentaplex, Support Internal ... menu tipsControl DeviceFront panel, USB mouse, keyboard, IR remote control, network keyboardInput MethodNumeral/Character/DenotationSystem StatusHDD status, data stream statistics, log ... / USB HDD/ USB CD/DVD-RW/ built-in SATA Burner/ Network downloadNetwork