... camera, Full screen, Repeat, Shuffle, Backup selection, Digital zoomBackup ModeUSB Device / NetworkNetworkEthernetRJ-45 port (10/100M)Network FunctionsTCP/IP, UDP, DHCP, DNS, IP ... (1 Rear), USB2.0RS2321 port, For PC communication & KeyboardRS4851 port, For PTZ controlGeneralPower SupplyAC 100~240 V, ... ATM box, 200mm×130mm×320mmWeight3.5KG-4.5KG(without HDD) 4 Channel D1 4HDD Standalone H.264 CCTV DVR