This topic has been moved to 
The Discless Circle.
http://www.audiocircle.com/index.php?topic=95587.0Although the topic is about his Antelope Zodiac Plus, it's really a USB driver and pc question.  Discless Circle will help out more, 
but ALL Zodiac DAC owners please check it out.I am a Zodiac Gold owner but I don't use it on Windows...MAC doesn't "install" USB driver...it's just recognizes Antelope Gold DAC.  Never had an issue.