http://tinyurl.com/py4jllb
Syba USB 3.0 External 3 Port with One Internal Port PCI-express 2.0 x1 Card with Low Profile Bracket SD-PEX20137
Based on Renesas USB 3.0 Host Controller IC
Compliant with Intel's Extensible Host Controller Interface (xHCI) Specification Revision 1.0
Supports Standard and Low-profile Desktop Computer