EXPRESS USB 4PORTS Full compliant with ExpressCard Specification 1.0 ExpressCard/34 Form Factor Module Hot-swapping feature allows to connect or disconnect devices without powering down system Fully supports EHCI and OHCI Compliant standards Compliant with Universal Serial Bus specification revision 2.0 Provides four external USB2.0 high speed port Supports simultaneous operation of multiple USB 2.0 and USB 1.1 devuces Supports data transfer rates of high-speed (480 Mbps),full-speed (12 Mbps), and low-speed (1.5Mbps) Support Windows 2000 / XP / Server 2003 / Vista