Network Video Recorder User Manual 
25 
1.4  Rear Panel 
  The rear panel vaires according to different models.   
DS-8600NI-E8, DS-7700NI-E4 and DS-7700NI-E4/P Series 
 
Figure 1. 5 DS-8600NI-E8 and DS-7700NI-E4 Series 
 
 
Figure 1. 6 DS-7700NI-E4/P Series 
 
Table 1. 7 Description of Rear Panel Interfaces 
1 network interface provided for DS-7700NI-E4/P and 2 network 
interfaces for DS-7700NI-E4 and DS-8600NI-E8. 
RCA connector for audio output. 
RCA connector for audio input. 
HDMI
TM
 video output connector. 
Universal Serial Bus (USB) ports for additional devices such as USB 
mouse and USB Hard Disk Drive (HDD). 
Connector for RS-232 devices. 
DB9 connector for VGA output. Display local video output and menu. 
Half-duplex connector for RS-485 devices.   
Connector for alarm input. 
Connector for alarm output. 
Ground (needs to be connected when NVR starts up). 
100 to 240 VAC power supply. 
Switch for turning on/off the device. 
Network  Interfaces  with 
PoE  function  (supported 
by DS-7700NI-E4/P) 
Network interfaces for the cameras and to provide power over Ethernet.