I have streamlined the design of my normal USB cable into a single leg unpowered version for use on dacs with internally powered USB inputs. The Amanero usb card is a good example of such an input and is widely used in the undustry beyond the dac brands named in the title if this listing.
This change is design stops high frequency noise from the server / transport power supply from reaching the dac and polluting the signal (data). Even on an extremely quiet server like my SGM 2015, this change in comfiguration gave an overall subjective improvement of @30% with greater solidity, transparency and the removal of glare we didn't even realise was there. A further benefit is that a longer length is no longer needed since there is no power noise to dissipate and further improvements in sound quality will arise from using a shorter length like the 0.5m 'jumper' shown in the listing photo.
This listing is for a 1.2m length and includes worldwide airmail.
Readers may find the last couple paragraphs of this review of an older iteration of usb cable helpful - http://positive-feedback.com/reviews/hardware-reviews/sablon-audio-cable-loom/
Intona users - this unit needs a USB voltage input however you can use an unpowered cable after the Intona if your dac usb is self-powered.