USB 3.0 Function: 1. USB 3.0 Transfer Speed: High transfer speeds can reach 5 Gbps, allowing a single USB 3.0 interface to exclusively utilize PCI-Express bandwidth and fully guarantee USB 3.0 transfer speeds. Connect USB 3.0 equipment using a single USB 3.0 interface. 2. Power Delivery: Provides more power when needed and automatically reduces power consumption when not. USB 3.0 can supply more power to support devices requiring higher power, and devices using USB for charging can complete charging faster. USB 3.0 supports states like standby, sleep, and hibernation. 3. Backward Compatibility: Backward compatible with version 2.0. USB 3.0 uses a 9-pin design, with four pins having the same shape and definition as USB 2.0, and the other five specifically for USB 3.0. USB 2.0 devices can be used on USB 3.0 interfaces. Function Description: Expand your PC with 4 USB 3.0 ports via a PCI-Express slot. Specifications: Supports PCI Express 2.0 bus specification. PCI Express data transfer rate up to 5 Gbps. Compliant with USB 3.0 interface specification. Backward compatible with USB 2.0/1.1 specification. USB 3.0 interface data transfer rate up to 5 Gbps, USB 2.0 interface data transfer rate up to 480 Mbps. The USB 3.0 interface can provide 900 mA of power to drive external devices. Supports plug and play. System Requirements: A computer with an available PCI Express slot. Supported Operating Systems: Windows 2000, XP, Vista, WIN7. Chip Model: Designed with VIA platform. PCI-E USB 3.0 2-Port Chipset: NEC 1. Compliant with PCI Express Base Specification, Revision 1.1. SuperSpeed (5.0Gbps) addition. USB 3.0 offers a variety of possibilities for applications requiring fast and high-capacity communication, while maintaining compatibility with USB 2.0. USB 3.0 PCI-E Card (IC VIA).