Superior performance of high-speed USB 3.0 devices The 2-port PCI-Express Interface Card (IFC-PCIE2U3S2 ) lets you enjoy the superior performance of high-speed USB 3.0 devices. USB 3.0 offers transfer speeds of up to 5 Gbps* for much faster transfer and backups and better performance from connected devices. The included low-profile bracket lets the card fit in slim PCs easily, uses only one PCI Express bus, and the ports allow connection of two USB 3.0 devices such as external HDD, USB flash memory, SSD, and other USB devices at the same time. Both ports are backward compatible with earlier USB 2.0 devices. Buffalo’s USB 3.0 Interface Card for PCI Express is a simple solution for connecting to and using USB 3.0 devices on your PC. USB 3.0 Interface Card for PCI Express is the best way to upgrade your current PC for use with SuperSpeed USB 3.0. Upgrade your desktop computer to faster USB 3.0 interface USB 3.0 transfers data at rates more than ten times that of USB 2.0 (5Gbps* vs. 480Mbps). This speeds up backup and transfer of photos, music, videos, documents, and other important data. The faster transfer rate also improves the performance of scanners, media players, and other peripheral devices supporting USB 3.0. A great solution to upgrade your current PC for use with SuperSpeed USB 3.0. Faster sequential reads This PCI-Express USB 3.0 achieves 10 times faster sequential reads than USB 2.0, boosting speeds from 36.9MB/s to 371.5MB/s. Also this board achieves 17% faster sequential reads than the previous 2 ports PCI-Express IFC-PCIE2U3S (from 305Mbps to 371.5Mbps). * Testing conducted by BUFFALO in January 2012 - SuperSpeed USB 3.0 interface transfer data at up to 5Gbps*, 10 times faster than USB 2.0, 480Mbps transfer speed - Fully backward compatible with USB 2.0 - 10 times faster sequential reads than USB 2.0-boosts speeds from 36.9MB/s to 371.5MB/s - Low-profile bracket included - Hot-swappable support - Driver supports Windows Server OS**, Windows 7, Vista, and XP