Dahua NVR21-4KS3 Series User Manual page 90

No. Name
1 Power Input
3 Network Port
5 eSATA Port
7 VGA Port
9 AUDIO OUT, RCA Connector
Figure 2-108 Rear panel
Table 2-44 Ports
No.
2
4
6
8
10
70
User's Manual
Name
Alarm In/Out
USB Port
HDMI Port
High-definition decoding card is not
installed in standard hardware
configuration, you can purchase as
needed.
AUDIO IN, RCA Connector
RS-232 Port