The plugin currently offers three backend "channels" to choose from: default (recent master, updated every ~1-2 weeks) release (2.8.0 stable, from 04/2022) legacy (2.7.4 stable, from 03/2016) If you don't see them all, you're likely using an older version of UNRAID.   The "problem" is the last official NUT release was way back in 04/2022, but a lot of useful and important changes have been made to the NUT project since (including new drivers, new supported
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