Exterior NVR21 Series, User Manual

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52
Figure 2-30
Please refer to the following sheet for detailed information.
Port Name Function
USB2.0 USB2.0 port. Connect to USB2.0 mouse.
NET Network port 10M/100M/1000Mbps self-adaptive Ethernet
port. Connect to the network cable.
HDMI High Definition
Media
Interface High definition audio and video signal output
port. It transmits uncompressed high
definition video and multiple-channel data to
the HDMI port of the display device.
HDMI version is 1.4.
VGA VGA video
output port VGA video output port. Output analog video
signal. It can connect to the monitor to view
analog video.
1-3 Alarm input
port 1-3.

Alarm input port.

When your alarm input device is using
external power, please make sure the
device and the NVR have the same
ground.
Alarm input
port ground
end Alarm input ground end.
NO Alarm output
port

Alarm output ports. Output alarm signal to
the alarm device. Please make sure