How do I export and backup video from my legacy NVR?

To export and backup video on a P2A, P2B, and Performance Series Network Video Recorder (NVR): 

1.  Go to the NVR console -- login as required.
2.  Attach an external USB drive formatted as FAT32 to any of the NVRs USB ports.
3.  Select Export.  
4.  Identify the cameras, dates, and time needed.
5.  Identify location data is to be saved. 
6.  Save export

Exports are limited to 8GB size export per export attempt.  Requires multiple exports if over 8GB is needed.