1. Compliant with Universal Serial Bus 3.0 specification Revision 1.0                                                                    
2.Low-speed (1.5 Mbps) / Full-speed (12 Mbps) / High-speed (480 Mbps) / Super-speed (5 Gbps)                                         
3.Supports 2 downstream ports for all speeds                                                      
4.Supports all USB compliant data transfer type as follows: Control / Bulk / Interrupt / Isochronous transfer                                    
5.Compliant with Intel’s eXtensible Host Controller Interface (xHCI) Specification revision 0.95                                                             
6.Support USB legacy function                                         
7.Operational registers are direct-apped to PCI memory space                                                                                8.Supports Serial Peripheral Interface (SPI) type ROM                                                                  
9.System clock: 24 MHz crystal or 48MHz external clock.                                                          
10.3.3 V and 1.05 V power supply  B