D-Link DNS-722-4 User Manual page 18

Section 2 - Installation
Connect the Ethernet Cable
Connect an Ethernet cable to the Ethernet port. Connect one end
of the Ethernet cable to the NVR. Connect the opposite end of
this cable to a Gigabit Ethernet LAN port of a router or a switch,
or directly to a computer.
Connect the UPS (Optional)
If you have a Universal Power Supply (UPS) that you would like
to use with the NVR, you may connect it before powering the
unit on.
1. Connect the USB cable from the UPS to the port on the back of the NVR.
2. Connect the power cable to the UPS. (Ensure that the UPS is plugged in and receiving power.)
Note:
To turn off the NVR, simply push the power button for 5 seconds. The power LED will blink and the NVR will turn off after a moment.
Attach the External Power Supply
Attach the external power supply to the DC power receptacle
located on the NVR's rear panel (labeled DC12V) and connect
the other end to an AC power outlet.
D-Link DNS-722-4/DNS-726-4 User Manual 14