How to Make the UGREEN US3000 NAS UPS Work on a TerraMaster F4-424 Pro

Last updated on 29 Sep 2025 📧 Subscribe
Contents hide
1 Step 1 – Create Udev Rules for the UPS
2 Step 2 – Configure NUT
3 Step 3 – Adjust Core NUT Settings
4 Step 4 – Reload and Restart Services
5 Step 5 – Enable UPS Support in the TerraMaster GUI
6 Why This Works Better Than In-Line UPS
6.1 Final Thoughts
6.2 Related
6.3 Discover more from NAS Compares

When TerraMaster released the F4-424 Pro, it became one of the most power-efficient Intel Alder Lake NAS systems on the market. Pairing it with an equally efficient UPS can be tricky though, since most in-line UPS systems consume 15W or more 24/7 even when the NAS is switched off.

After testing the UGREEN US3000 NAS UPS, Tomas in our inner circle discovered it can act as a direct-replacement power brick for the F4-424 Pro. The UPS outputs 12V with higher current headroom than the stock TerraMaster PSU, and crucially, it draws no power when the NAS is off. This makes it ideal for always-on setups where every watt matters.

Below is a step-by-step guide to integrating the UGREEN US3000 with a TerraMaster F4-424 Pro using Network UPS Tools (NUT).

Step 1 – Create Udev Rules for the UPS

Tell Linux how to recognise the UGREEN UPS via USB. Add these rules:

echo 'ATTR{idVendor}=="2b89", ATTR{idProduct}=="ffff", MODE="664", GROUP="nut"' >> /etc/udev/rules.d/50-ups.rules
echo 'SUBSYSTEM=="usb", ATTR{idVendor}=="2b89", ATTR{idProduct}=="ffff", MODE="0660", GROUP="nut"' >> /etc/udev/rules.d/99-ups.rules

Step 2 – Configure NUT

Edit /etc/nut/ups.conf and add the UGREEN UPS entry:

[ups]
driver = usbhid-ups
port = auto
vendorid = 2b89
productid = ffff
desc = "UGREEN US3000 UPS"
subdriver = Arduino

Step 3 – Adjust Core NUT Settings

Update the following files:

  • /etc/nut/nut.conf

    MODE=standalone

  • /etc/nut/upsmon.conf

    RUN_AS_USER root

  • /etc/nut/upsd.conf

    LISTEN 0.0.0.0 349

Step 4 – Reload and Restart Services

Apply the new rules and restart the UPS services:

udevadm control --reload-rules && udevadm trigger
systemctl restart nut-driver@ups.service
systemctl restart nut-server
systemctl restart nut-monitor

Step 5 – Enable UPS Support in the TerraMaster GUI

Once the NUT service is running, go into the TerraMaster control panel and enable UPS support. We recommend setting a 30-minute shutdown timer, which allows the UPS to cover power blips and still perform a safe shutdown if power is lost for longer.

Why This Works Better Than In-Line UPS

  • Zero standby drain when the NAS is switched off.

  • Direct 12V output compatible with TerraMaster’s PSU requirements.

  • NUT monitoring ensures the NAS safely powers down during outages.

  • Compact size compared with traditional UPS systems.

Final Thoughts

If you own a TerraMaster F4-424 Pro (or similar NAS using 12V DC input), the UGREEN US3000 NAS UPS is a perfect pairing. It eliminates wasted energy from traditional UPS units while still giving you full monitoring and graceful shutdown through NUT.

 

This setup requires a bit of Linux tweaking, but once configured, it runs silently in the background and only comes alive when you need it most.

Check Amazon for the UGREEN US3000 UPS

Check AliExpress for the UGREEN US3000 UPS

 

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One thought on “How to Make the UGREEN US3000 NAS UPS Work on a TerraMaster F4-424 Pro”

  1. Hello, have question regarding DXP4800 Plus + TrueNas + UGREEN US3000
    After lots of hours of troubleshooting I came across this post and this was only instruction that was close enough, so I tried to implement this workaround.
    This is the reason why i’m posting here

    I installed TrueNas, 25.10.1 – Goldeye, on it but there is obstacle that I can jump over. Trying to connect UGREEN US3000 wit it it but without success.

    Connection is made via SSH.
    There is no HDD in NAS at the moment so there is no pool, and no data can be lost while this experiment

    It is connected to USB this is output:
    truenas_admin@truenas[~]$ lsusb
    Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
    Bus 003 Device 003: ID 2b89:ffff UGREEN US3000
    but:
    truenas_admin@truenas[~]$ upsc ups@localhost
    Init SSL without certificate database
    Error: Driver not connected
    truenas_admin@truenas[~]$

    I tried to change every setting in System–> Services–> UPS but without success.

    Everything went well until:
    Step 2 where I get mesage after:
    sudo nano /etc/nut/ups.conf
    /etc/nut/ups.conf is meant to be read-only

    Step 3 after:
    sudo nano /etc/nut/nut.conf
    /etc/nut/nut.conf is meant to be read-only

    Step 4
    after executhing this command:
    udevadm control –reload-rules && udevadm trigger
    got 2-3 pages of errors

    On top of all after restart this conf files from Step 1 are delted
    /etc/udev/rules.d/50-ups.rules
    /etc/udev/rules.d/99-ups.rules

    Do you maybe have some experience with this and howe some advice how to utilize UGREEN US3000 on DXP4800 Plus + TrueNas.

    Thx in advance.

    Have a nice day
    Regards Mario

    Reply