1. With 2 USB3.0 ports, in line with PCI 2.0 system specifications
2. When connected to a USB3.0 device, it can transfer data at a speed of up to 5.0Gbps
3. Compatible with all USB2.0 and USB1.1 devices, and can the theoretical transmission speed that could not be achieved when using the USB2.0 interface.
4. USB3.0 PCI‑E dual interface expansion card, expand 2 USB3.0 interfaces on a PC with PCI slot
5. Supports external power outlets to supply up to 900mA maximum/port connection capacity for each USB 3.0

Spec:
Item Type: USB3.0 Expansion Card
Backward Compatibility: USB2.0, USB1.1, USB1.0
Transmission Rate: 5000/480/12/1.5Mbps
USB Power Output: Up to 5V 900mA
Built-in power interface
Support USB hot plug function
Support for Windows 2000//2003/Vista and 64-bit /2003/7 etc.
Product Description:
1. with PCI-Express Specification Version 2.0
2. with USB3.0 SuperSpeed specification version 1.0
3. The highest transmission rate is up to 5Gbps, which is much higher than 480Mb/s of USB2.0, up to 10 times (theoretical value)
4. with the revision 1.0 of the USB 3.0 specification
5. Support low speed (1.5Mbps) / full speed (12Mbps) / high speed transmission (480Mbps) / super high speed (5Gbps)
6. Support all data transmission types that with the USB standard as follows; control/bulk/interrupt/synchronous transmission
7. Revision 0.95 of the Extensible Host Controller Interface (XHCI) specification compatible with for Intel
8. Support USB traditional function, support external power socket,
9. To supply asmedia1042 chip for each USB 3.0 up to 900mA maximum/port connection capacity
10. Support for /Vista/WIN7/sever2003/2008 operating system
Product Type: PCI-E to USB3.0 expansion card
Product Interface: PCI-E
USB30. The Chip Model Of The Expansion Card:
Product List:
1 x USB3.0 Expansion Card
1 x CD

packing list:
1 x USB3.0 Expansion Card1 x CD