11
Figure 1-4
1
Fan
2
The fourth video
input channel
3
The third video
input channel
4
The second audio input
channel
5
The second
video inpu
channel
6
The first audio input
channel
7
The first video input
channel
8
Audio output
9
Video output
10
VGA port
11
RS232 port
12
USB port
13
Networkport
（
RJ45
）
14
ALARM-RS485
port
15
Power button
16
Power socket
1.4.2 Connection Sample
Here is a connection sample of DVR0404MB/0404MBD for your reference. See
Figure 1-5.
