2 Port USB 3.0 PCIe SFF Internal Card allows you to connect multiple USB peripherals to your PC without the expense of replacing your motherboard. The USB 3.0 2-Port PCI Express Card enhances the performance of data transmission beyond existing USB 2.0. Add 2 USB 3.0 ports to your current system, Compatible with USB 2.0 devices, Ideal for external drives and HD Streaming, Fits any PCI Express Slot adapters.