Having switched to an USB 3.1 card, my Adnaco-S3B: USB 3.0/2.0/1.x Over Fiber Optic Extension System is for sale. This is a great way to isolate your DAC, USB 3 NIC or USB 3 HDD from your player PC.
The entire kit will ship in original packaging as described here:
http://www.adnaco.com/products/s3a/
1 meter of fiber is included. The kit is in perfect working condition.
Payment via PayPal
$200 Shipping included
Continental US only please
PM for details