1.4 External USB Port and 1 Internal USB Port ,PCI BUS Computer Interface                                  

2.Provides four external and one Internal compliant cable ports up to 400Mbps Asynchronous and isochronously data transfer with 100/200/400Mb/s Data rate                                                                       

3.Supports up to 127 devices per port；Supports all USB compliant devices and hubs and Supports peripheral hot  swap and wake-up                                                                                                         

4.Compatible with the PCI2.2                                 

5. Support USB device bandwidth up to 12Mbps per port.                                        

6.Seamless integration with 3V and 5V PCI-based computer products              

7.Operating system support: Windows 98 se2/ME/2000/XP