Placa madre de gigabyte con USB especial para conectar tu DA

Las placas madre de gigabyte traen un puerto usb especial para conectar tu DAC.
Creen que sirve para algo o es puro marketing?? Vale la pena??

G1.Sniper Z87
http://ar.gigabyte.com/products/product-page.aspx?pid=4802#kf
G1.Sniper Z87
http://ar.gigabyte.com/products/product-page.aspx?pid=4866#kf

Clean, low-noise power for your
Digital-to-Analog converter
Featuring a gold plated USB 2.0 port, GIGABYTE USB DAC-UP provides clean, noise-free power delivery to your Digital-to-Analog Converter. DACs can be sensitive to fluctuations in power from the other USB ports, which is why GIGABYTE USB DAC-UP takes advantage of an isolated power source that minimizes potential fluctuations and ensures the best audio experience possible.
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teoricamente y por lo que he leido, deberia servir para algo...cuanto se note o no, no lo se....habria que probarlo....