USB3.0 external hard disk is support in normal desktop

hi! I m thinking of buying a new external hard disk for my desktop. So is it require some different port in desktop for usb 3 or the traditional usb port are enough.
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  1. The actual shape & size of the port is exactly the same whether it be USB 1.1, USB 2.0 or USB 3.0

    USB 3.0 devices are almost always compatible with USB 2.0 systems, but the device will only transfer data at the speed associated with USB 2.0

    To be on the safe side, check the packaging or the online description of any USB 3.0 device to make sure it's also compatible with USB 2.0, though I've yet to see one that isn't.

    And in any case, since you have a desktop PC you can always install a PCI USB 3.0 card to take advantage of a USB 3.0 drive's better performance.
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