Big Expansion: Provides seven external USB 3.0 ports for any PCI Express-enabled computer system for connecting additional external hard drives, CD/DVD drives, printers, scanners, webcams, game controllers, digital cameras, etc. to a computer system. SuperSpeed USB 3.0: Give you fast access to your files with data transfer rates up to 5 Gbps, at least 5 times faster than USB 2.0. Lightning fast to transfer HD movies, photos, music and more. Note: The actual transmission speed may be limited by the connected device. Good Compatibility: Support Windows 10 / 8 / 7 / Vista / XP (32/64-bit) and more operating system; Backwards compatible with USB 2.0 / 1x devices; Comply with PCI Express x1 slot and versions above. Stable Power Supply: Equipped with a power management chip plus 15-Pin SATA power cable, which supplies 5V/2.4A power. Note: It is mandatory to connect the card to the power supply of the PC. What You Get: 1x USB 3.0 PCI-E expansion card, 1x 15-Pin to 2x15-pin SATA power cable, 1x CD driver, 1x installation screws and 1x user manual.