Add front or rear panel USB 3.0 ports to your computer case using USB 3.0 motherboard-style headers - 4 Port PCIe USB 3.0 Card - 2 External & 2 Internal - SATA Power - UASP Support - USB 3.0 Adapter Card with 2x Int Motherboard-Style Headers - Native OS Support in Windows 8 and 8.1 and Linux kernel 2.6.31 or later for easy driver installation - Flexibility to connect external and internal USB 3.0 devices