Main Features: (1). Providing speeds up to 10x faster than that of USB 2.0 this PCI Express USB 3.0card enables you to access your data and transfer files much faster than USB 2.0 by adding additional one USB 3.0 port to your advice. Transfer rate: Super-Speed (USB 3.0) 5Gbps High-Speed (USB 2.0) 480Mbps Full-speed (USB 1.1) 12Mbps Featuring a native NEC PCI Express host controller chipset the new USB3.0 standard supports transfer rates of up to 5Gbps while still providing connectivity and support for the older USB 2.0 (480Mbps) and1.1 (12Mbps) devices. (2). In addition to providing a much faster transfer rate the PCE102 USB 3.0 card also supplies 900mA of power per USB port allowing more and more external devices to operate without the need of an additional power source. (3). Size: 75x 34x 5 mm and Support Windows XP 2000 Vista and Windows 7 etc. Backwards compatible with previous USB standards Compliant with PCI Express 2.0 specs Fully compliant with USB 3.0 revision 1.0 specifications and Intel xHCI rev0.96 specifications Fully supports the following USB Communication Types: Control/Bulk/Interrupt/Isochronous Transfer Provides up to 900mA per USB port Support USB transfer speeds of 5Gbps (Super Speed) 480Mbps (High Speed) 12Mbps (Full Speed) and 1.5Mbps (Low Speed) Supports PCI Bus Power Management Interface Specification revision 1.2 Supports up to 127 USB devices connected to a single interface. (Requires additional USB hubs to obtain this number) USB ports are Hot Swapping and Plug-and-Play compliant