NEEWER is a registered trademark. ONLY Authorized seller of NEEWER can sell under NEEWER listings. Specification: *Supports the following speed data rate: Low-speed(1.5Mbps)/Full-speed(12Mbps)/High-speed(480Mbps)/Super-speed(5Gbps). *Suppots PCI Low profile. *Up to 900mA MAX/port.. System Requirements: *PC with 512MB of RAM and 1.0GHz or faster processor. *Available PCI Express 1.x/4.x/16.x slot *Windows XP/Server 2003/Vista/Server 2008/Windows7 or later2 Note: *To achieve the maximum throughput, the PCI-Express slot must be version 2.0 or higher. Performance per port may decrease if multiple ports are *transferring data simultaneously due to limited throughput of the PCI-Express slot. *To meet USB 3.0 transfer speed, high quality USB 3.0 cables and devices are required. *Supports both 32-bit & 64-bit OSes. *Make sure the power is well connected; otherwise you will see a "Power Surge on Hub Port" message error and no 5V bus power in USB ports. *The file NEC(RENESAS)U3-201-202 of the CD is for PCI Express Card. Package contents: *1x PCI Express Card *1x Low Profile Bracket *1x Software Drivers CD *1x User Manual