I have a precision 5550 and a WD19TB, everything works great (I have not had the fan noise other seemed to have experienced), but I do have electrical noise coming from the dock, it is like a low buzz of a mosquito which probably wouldn't be heard in the office but since I am working from home in the pandemic, you tend to notice these things with lower noise levels.
It sounds almost like ground noise/Morse code.
Has anyone else experienced this? It's not loud, but it's like having a mosquito flying around.
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I'm experiencing the same phenomenon with my newly bought unit (connected to XPS15 9570) and since I'm using this computer for music recording, this is a real bother. Will be glad to find a solution.
Exactly the same problem over here on a XPS 17. Sounds like a broken harddrive, hopelessly searching for something.
This guy over on Reddit seems to have the same issue :
Have you had your docks replaced by Dell ?
I got my WD19TB at the beginning of the week, and also have the problem when connected to my Precision 3551.
Talked to Dell technical support and they replace it, hopefully, I get the new one at the end of the week.