5
3 DVR Components
Check the label on the bottom of the DVR and note the model number and the power requirements
for this DVR. The label on the rear panel lists the serial number for the DVR. Please provide this serial
number when requesting information or service for this device.
3.1 Front Panel
The figure below depicts the DVR front panel.
Figure 3-1
Light
Name
Function
HDD
HDD status indicator
A blue light indicates that the HDD is malfunctioning.
NET
Network status indicator
A blue light indicates that the network connection is
abnormal.
POWER Power status indicator
A blue light indicates that the power connection is OK.
USB 2.0 port
Connect to a peripheral USB 2.0 device (storage mouse,
CD/DVD burner).
3.2 Rear Panel
The figure below depicts the DVR rear panel for the 4-, 8-, and 16-channel units (image for reference
only).
X21A1E 4+2 Channel DVR
Figure 3-2
Ref
Name
Ref
Name
Ref
Name
1
Analog Video Input (x4)
5
RS485 Port (A/B)
9
On/Off Button
2
Audio Output
6
USB 2.0 Port
10
Audio Input (x4)
3
HDMI Port
7
DC12V Input
11
VGA Output
4
RJ-45 Port (100 M)
8
Alarm Input/Output
