... output)Recording Mode manual, auto, motion detection, trigger eventsPlayback1-ch / 2-ch / 3-ch / 4-chBackup ModeHDD, CD-writer, USB storageRecording ... )RS485standard 485, half duplex, 3.81 binding portUSB Interface2 USB 2.0 ports, each on front/rear panelDisplayLCD, blue backlightLocal Loginusername ...