Fully compliant with ExpressCard Specification 1.0. Full single-lane (or x1) PCI Express throughput. ExpressCard/34 form factor module. Compliant with Universal Serial Bus 3.0 specification Revision 1.0. Compliant with xHCI (eXtensible Host Controller Interface) specifications Revision 0.95. Supports simultaneous operation of multiple USB 3.0, USB 2.0 and USB 1.1 devices. Supports USB data transfer rate of 1.5/12/480/5000 Mbps. Expands two external USB3.0 Super-Speed ports on the system.