QR414 User Manual42.2: Rear PanelItem Number Name/Symbol Description Function1 CH1-CH4 VIDEO INPUT Ch1-4 (BNC Interface) Connection2 VIDEOOUTPUTVIDEOOUTPUT Connect Monitor Output (BNC Interface)3 AUDIO INPUT Audio Input Audio Signal Input (RCA Interface) Connection4 AUDIOOUTPUT Audio Output Audio Signal Output (RCA Interface) Connection5 LAN Ethernet Port Intranet and Internet Connection (RJ-45 Interface)6 USB Port USB Mouse Connection7 Power Switch Turn Power On and Off8 USB 2.0 Port USB Device (Flash Drive, Hard Drive) Connection9 RS485 AlarmPortRS485 Interface10DC12VPower Port Power Supply - DC12V 3A O
