Add two USB 3.1 Gen 2 type-C (10 Gbps) ports to your new PC or older PCIe-equipped desktop computer, transfer files between USB devices and the computer at fast speeds. Support Windows, Linux, and Mac OS operating systems, this USB C PCI express adapter is widely compatible, and is backward compatible with USB 3.0 and USB 2.0 devices Support data transfer up to 10Gbps, this expansion card is a necessity for external drives, and is ideal for file backups, video editing, and data recovery No need any extra power supply, with built in self-powered IC Please check if your computer has empty PCIE X4/X8/X16 slot for this USB 3.1 Gen2 card before purchase.