Good customer service, delivered on time.

Have been running this for some time, purposely on a clean system with no activity. Ran USBGuard as a precaution, my device did not trigger usbguard at all so only takes power from the USB header.

Works exactly as described so on a machine not doing much IO I needed to ensure there was enough disk activity to prevent a reboot.

In short, good value, meets my specific use case exactly.

Exactly as in the description, works perfect. I have 2 so far and recommend it to anyone for building 24/7 computers.

Seller was polite and responsive and item quality seems good, but doesn't exactly work as advertised:

Expectations: item works in fixed led mode ("system OK") until HDD led totally stops, when it should enter led blinking mode ("reset warning mode") and eventually reset the computer.

Reality: system got reset multiple times even when there is regular HDD activity because the device isn't "sensitive" enough to detect it. The device goes into blinking mode ("reset warning mode") even when there is some HDD activity. You need HEAVY HDD usage to keep it from resetting.

Video: https://streamable.com/qwdxd
Explanation:
- Until 0:45 you can see normal HDD activity on my rig (top left purple-ish led blinking) but the watchdog warning led (bottom right red led) kept blinking (eventually it would have reset the computer)
- Arround 0:45 i have to manually increase the HDD load so the warning mode gets disabled.
- If left unattended (intended use for a mining rig) it would be reset-looping forever (not good)
- Tried some workarrounds... scheduling a file read/write every minute or so, or using software to keep the HDD awake and in use (KeepAliveHD) and nothing worked. Again, you need HEAVY HDD loads every 1/2 minutes or so... not really working as expected

EDIT REPLY1: when i tried some workarrounds I considered solution (1), I considered that the led in parallel may be interfering with the device so i disconnected it but it didn't made a difference at all, so I reconnected it to record the video.