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With this PCI Express controller card you easily add 2 extra Super Speed USB ports to your desktop computer and upgrade the dataspeed to 4,8Gb/s! The CUSB3EXI has a maximum dataspeed of 4,8Gbs, 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 controller card in the express slot of your computer, install the included drivers and ready you are!