Yes, you might find some USB port noise sensitivity in some DACs:
http://archimago.blogspot.com/2015/05/measurements-usb-hubs-and-8khz-phy.html..and he finds one DAC in certain setting producing artifacts of noisy USB HUB but the same time he states that he had never seen this before:
Okay, to end off... Let me remind everyone one more time that what I'm measuring with the 8kHz noise here is because of the Emotiva XSP-1's sensitivity to noise through the "Home Theater Bypass" input. The 8kHz tone is NOT something I have ever heard / measured coming out of a reputable DAC's analogue outputs! Nor is it something that's found in Stereophile USB DAC measurements. If it were not for this noise sensitivity, I would not even have bothered with looking at ways to attenuate the computer USB noise. Nonetheless, I think this is an interesting real-life demonstration of the noise pollution that can come out of the computer's USB port and a solution that works reasonably well. I did not bother with jitter tests this time as I have never seen the Dunn J-Test change in any substantial fashion with the use of a hub with an asynchronous DAC (see the measurements last time). Think you have a jitter issue? Save up the cash and buy a better asynchronous USB DAC - forget cables and tweak products IMO.
Last sentence is exactly what I'm saying. Also look at Stereophile test of, for instance, Ayre QB-9 especially jitter test (Fig. 14).
http://www.stereophile.com/content/ayre-acoustics-qb-9-usb-dac-measurements#rgvqgdT0kSAdPz8x.97It shows no effect of jitter down to -125dB and the only visible jitter artifacts below that are from 120Hz switching noise of linear power supply (120Hz spaced sidebands). This could be fixed by using high quality SMPS. DacMagic behaved poorly in this test.
Coupled noise is usually a common mode that can be effectively defeated by even such simple devices like comment mode chokes. You can optimize your system running USB thru quiet Hub (faster computer will make it worse) but the proper thing to do is to find better DAC.