You would need a USB3 adapter (pci card or the like) to dapt your current Computer to use USB 3.0
They are backwards compatible.- see here for example click here#
There are two types of USB 3.0 adaptor cards card that can be bought right now to add USB 3.0 ports to a computer.
There are PCIe cards for desktops and ExpressCards for laptops or notebooks.
To install a PCIe card you will need to open up your computer and push the card into place. This operation scares some people but if you check out the procedure for installing a PCIe card (you could try a search of You Tube), you will see that it is pretty painless. Most USB 3.0 PCIe adapter cards have two USB ports and all will work equally well with USB 3.0 and USB 2.0.
Installing an ExpressCard is even easier. Just slip the card into the ExpressCard slot and you are ready to go. Usually, the card will be recognized instantly and you can go ahead and use the pair of USB 3.0 ports without rebooting.