Get the scalability you need by adding 7 USB 3.0 ports with SATA power to your computer PCIe USB 3.0 Adapter Card Standard and Low-Profile UASP Support 1 Internal and 6 External Ports Native OS Support in Windows 8.1 and 8 and Linux kernel 2.6.31 or later for easy driver installation Unique dual-profile design USB 3 Controller backward compatible with USB 2.0 & 1.x devices