SIIG's USB 3.1 2-Port PCIe Host Adapter Type-A/C enables you to enhance your desktop computer with the latest USB 3.1 technology, delivering up to 10Gb/s data transfer rates (two times faster than USB 3.0). It adds two USB 3.1 Gen 2 ports (one Type-A and one Type-C) to your desktop computer via an available 4x or larger PCI Express slot. Each USB 3.1 port supports independent over-current protection to protect the connected device and a built-in 4-pin power connector is available to ensure sufficient power is supplied when needed. It is an excellent adapter card to connect high-bandwidth USB devices such as external hard disks, high resolution webcams, video surveillance cameras, digital video cameras, multi-channel audio and more.SIIG's USB 3.1 2-Port PCIe Host Adapter Type-A/C enables you to enhance your desktop computer with the latest USB 3.1 technology, delivering up to 10Gb/s data transfer rates (two times faster than USB 3.0). It adds two USB 3.1 Gen 2 ports (one Type-A and one Type-C) to your desktop computer via an available 4x or larger PCI Express slot. Each USB 3.1 port supports independent over-current protection to protect the connected device and a built-in 4-pin power connector is available to ensure sufficient power is supplied when needed. It is an excellent adapter card to connect high-bandwidth USB devices such as external hard disks, high resolution webcams, video surveillance cameras, digital video cameras, multi-channel audio and more.