Comment # 10 on bug 361763 from Stanislav Brabec

The bug remains opened for years.

Over the time, the permission system completely changed and migrated to udev.
Also nut should now detect HID devices correctly.

If you still have a problem with your UPS, please create an entry for your
device to udev tables.

USB HID devices should be listed in:
/usr/lib/udev/rules.d/95-upower-hid.rules
Additions should be reported to the upower upstream.

Non-HID USB devices should be listed in:
etc/udev/rules.d/52-nut-ipmipsu.rules
or
/etc/udev/rules.d/52-nut-usbups.rules
Additions should be reported to the nut upstream.

Serial devices still need manual configuration, as they don't allow Plug And
Play detection.