Super-Speed USB 3.0 interface is the next revolution in I/O interconnect standards that will deliver the bandwidth and features required by PCs, consumer electronics and communications devices. with 10 times faster throughput than USB 2.0 standard and backward compatible with current USB device features, USB 3.0 interface will be the trendy of IT technology.This board is a 4-port Super-Speed USB 3.0 PCI Express card. It is compliant with the PCI Express Generation 2 specification for host PC system. It works up to 5 Gbps for data transfer when connecting to USB 3.0 compliant peripherals, while maintaining compatibility with existing USB peripheral devices.This board supports USB 3.0 High-Speed device and backward compatible with current USB 2.0 High-Speed and USB 1.1 Full-Speed device. It is an ideal choice for external storage devices, MP3 players, external DVD Writer, Card Readers, digital cameras, webcams, networking, video devices, and all other USB devices.FeaturesFully compliant with PCI Express ( PCI-e ) Base Specification Revision 2.0Single-lane (x1) PCI Express throughput rates up to 5 GbpsCompliant with Universal Serial Bus 3.0 specification Revision 1.0Supports simultaneous operation of multiple USB 3.0, USB 2.0 and USB 1.1 devicesSupports the following speed data rates as follows:Low-speed (1.5Mbps) / Full-speed (12Mbps) / High-speed (480Mbps) / Super-speed (5Gbps)Compliant with Intel’s eXtensible Host Controller Interface (xHCI) Specification Revision 1.0Supports 4 downstream ports for all speedsBuilt-in 4-pin power connector for receiving extra power supply from systemHot-swapping feature allows you to connect/disconnect devices without powering down the systemSupport Windows® XP/Vista/7/8/8.1 and Latest Windows Version (32/64 bit)Package Contents1 x USB 3.0 4-Port PCI Express Card1 x Driver CD1 x User Manual