If you have a UPS that you would like to use with the NVR, you may connect it before powering the unit on.
Step 1: Connect the USB cable from the UPS to the port on the back of the NVR.
Step 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.
Step 3: 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.