Does Zen Server mk3 have galvanic isolation on its USB output to the DAC?

[alanrew]

I've looked at the documentation for my Innuos Zen Server mk3 & I can't find anywhere that says whether the USB output is galvanically isolated. The Ethernet connections are documented as being so.

The reason I ask is to discover whether the USB connection could somehow be a source of RF interference into the DAC.

Thanks in anticipation.