Configure APC Powerchute (UPS) on RN214

I am not aware of a Linux version of PowerChute that will work on an UPS connected via USB.  If you do have a network card in your UPS, then the instructions (which require using SSH on the NAS) are here: Powerchute-network-shutdown-installation-on-linux.

But the NAS has Network UPS Tools (NUT) already installed.  If you just plug the UPS USB cable into the NAS, it should recognize and configure the UPS shut-down.  You don't have the same visibility into the UPS as with PowerChute, but it properly protects your NAS by doing an orderly shut-down when the battery gets low.  The UPS configuration is located on the System/Power page of the GUI.

FYI, Eaton does have a Linux version of their software (Eaton Power Protector) that works with a USB connected UPS and can even monitor one NAS installation from another (or between a PC and UPS).  But the NUT software also sees the UPS at boot and the two can't talk to the UPS over the same interface.  The result is neither works till the UPS is removed via the GUI after every re-boot.  I have not figured any way to turn off Netgear's automatic creation of a NUT configuration file and starting monitoring  when it finds an UPS present on a USB port at boot time.  So even if you find a version of PowerChute for Linux that supports a USB interfaced UPS, you'll likely run into the same problem.