Features: 1.With 2 USB3.0 ports, in line with PCI 2.0 system s 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 reach 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 specification: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 SATA power interface Support USB hot plug function Support for Windows 2000/XP/2003/Vista and 64-bit XP/2003/7 etc. Product Description: 1. Comply with PCI-Express Version 2.0 2. Comply with USB3.0 SuperSpeed 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. Comply with the revision 1.0 of the USB 3.0 5. Support low speed (1.5Mbps) / full speed (12Mbps) / high speed transmission (480Mbps) / super high speed (5Gbps) 6. Support all data transmission types that comply with the USB standard as follows; control/bulk/interrupt/synchronous transmission 7. Revision 0.95 of the Extensible Host Controller Interface (XHCI) 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 XP/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: NEC720202 Product List: 1 x USB3.0 Expansion Card 1 x CD PackageList:1 x USB3.0 Expansion Card1 x CD