A super fast and high-capacity data transfer solution. Stable and reliable NEC Chipset D720202. Compliant with USB 3.0 specification. Date transfer rate up to 5.0Gbps / 625MB/s. Compatible with USB 2.0 & 1.1 specification. Compliant with Single-Lane (x1) PCI-Express specification revision 1.0a. Supports 2.5Gbps PCI-E bus with full duplex channel. 2 USB 3.0 type A female connectors available. Plug & play and hot swapping capability. Bus-powered mode and no external power required for most of peripherals. 4 pin power connector available for some high current consumption peripherals, like 3.5" HDD. Support Windows XP / Vista / 7 / 8 / Server 2008. Package Content: 1X Brand New 2 Port USB 3.0 HUB PCI-E Adapter. 1X Driver CD.