high pitch sound problem - ultrastudio 4k mini

Hi.

I havepurchased and installed an ultrastudio 4k mini and noticed a high pitch sound coming from the back of the unit. it is not connected to my macbook pro or to a monitor and it still makes that noise. its faint but louder than all my audio gear so its pretty annoying. has anybody experienced this? is it normal or is it that my uni is faulty.

Hi,

I have the same high pitch sound issue on my unit.
Any update about the reason of this problem?

Thank you