Problem/Justification
I have a Corsair HX1000i Fully Modular Ultra-Low Noise Platinum ATX 1000 Watt PC Power Supply (UK) (CP-9020259-UK) which has a USB out and can be monitored with Corsair iCUE software.
You can get various metrics from this power pack and I am sure other brands which would be useful to users and their self builds.
On Windows you use the CORSAIR iCUE
Software, which you can monitor your power supply performance, toggle single rail or multi rail mode, and control fan speed directly from your desktop.
Impact
A user can see how much power their TrueNAS build is using, and can see if there are any issues with the power unit.
User Story
This would be a nice feature to be added to reporting and NetData and would fit nicely with UPS reporting.
Additional
This is also expanding to other devices such as power supplies.