With this PCI Express Card you easily add 4 extra SuperSpeed USB 3.0 ports to your desktop computer and upgrade the dataspeed to 4.8 Gbps! The CUSB3EXI has a maximum data speed of 4.8 Gbps, which makes it very fast to copy very large files or documents to and from your desktop computer. You simply place this USB 3.0 PCI Express Card in the Express Card slot of your computer, install the included drivers and ready you are!