Feature:1. With 2 USB3.0 ports, in line with PCI 2.0 system specifications2. When connected to a USB3.0 device, it can transfer data at a speed of up to 5.0Gbps3. 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 PCIE dual interface expansion card, expand 2 USB3.0 interfaces on a PC with PCI slot5. Supports external power outlets to supply up to 900mA maximum/port connection capacity for each USB 3.0Specification:Item Type: USB3.0 Expansion CardBackward Compatibility: USB2.0, USB1.1, USB1.0Transmission Rate: 5000/480/12/1.5MbpsUSB Power Output: Up to 5V 900mABuilt-in SATA power interfaceSupport USB hot plug functionSupport for Windows 2000/XP/2003/Vista and 64-bit XP/2003/7 etc.Product Description: 1. Comply with PCI-Express Specification Version 2.02. Comply with USB3.0 SuperSpeed specification version 1.03. 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 specification5. 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 transmission7. Revision 0.95 of the Extensible Host Controller Interface (XHCI) specification compatible with for Intel8. Support USB traditional function, support external power socket,9. To supply asmedia1042 chip for each USB 3.0 up to 900mA maximum/port connection capacity10. Support for XP/Vista/WIN7/sever2003/2008 operating systemProduct Type: PCI-E to USB3.0 expansion cardProduct Interface: PCI-EUSB30. The Chip Model Of The Expansion Card: NEC720202Product List: 1 x USB3.0 Expansion Card1 x CD.Package List:1 x USB3.0 Expansion Card1 x CD