Hi Tech Legion posted a review on the Sharkoon USB3.0 (SuperSpeed) Host Controller Card

The Sharkoon USB3.0 (SuperSpeed) Host Controller Card is an affordable option to add USB3.0 capabilities to your system. The Sharkoon USB3.0 Controller Card fits into any existing PCIe-x1 motherboard slot. The only extra requirement for the Sharkoon USB3.0 card is a spare 4 pin Molex power connector.

Sharkoon USB3.0 (SuperSpeed) Host Controller Card Review