... SATA HDDs up to 6TB, 2 USB2.0> Built-in web server, CMS(DSS/PSS) & DMSS ModelDH- ... zones for privacy masking for each cameraOSDCamera title, time, video loss, camera lock, motion detection, recordingRecordingCompressionH.264 / ... Raid(Redundancy)Auxiliary InterfaceUSB Interface2 ports, 1 for mouse control, 1 for backupRS232Dahua keyboard, PC communicationRS485PTZ controlEnvironmentalPower SupplyDC12V/3 ...