UGREEN US3000 UPS not detected in GUI device dropdown

[AineeJames]

I'm running a DXP2800 on ZimaOS v1.6.1 with a UGREEN US3000 UPS connected via USB. The UPS is recognized by the system at the kernel level (lsusb shows vendor 2b89, product ffff), but the GUI's Power loss protection settings shows no available devices in the dropdown.

From my own digging around, the root cause is two-fold:

1. NUT version: ZimaOS ships NUT 2.8.2, which does not include the Arduino HID subdriver. The US3000 requires this subdriver, which was added in NUT 2.8.3. I was able to confirm this by building NUT 2.8.5 from source — with subdriver = Arduino in ups.conf, the UPS works perfectly and upsc returns full data including battery charge, runtime, and status.
2. GUI device scanner: The /v2/zimaos/ups/devices endpoint returns an empty list because the internal USB device scanner doesn't recognize vendor ID 2b89 (UGREEN). Even with the driver running and /v2/zimaos/ups/status returning valid data, the device never appears in the dropdown, and the config cannot be enabled through the GUI.

This is a known issue upstream — see networkupstools/nut#2987 and networkupstools/nut#3281.

Request:

• Bump the bundled NUT version to 2.8.3 or later
• Add UGREEN (vendor ID 2b89) to the GUI's UPS device scanner

UGREEN sells the US3000 as a NAS UPS and it's a popular pairing with DXP hardware, so this would likely help a lot of users.