... CardIntroductionThis is a 2 Port USB 3.0 ExpressCard/34MM which complies with USB 3.0 Specification, and Intel’s extensible Host ... USB 2.0 low speed 1.5Mbps.2,Compliant with Intel’s extensible Host Controller Interface (xHCI) Specification revision 0.95 ... ,ExpressCard/34MM form factor module.5,Max 900mA output per port.6,Support OS: Window Vista, Window XP, Windows 7. 2 ...