How do you turn your old USB port into a 2.0 USB port?

The USB 1.0 and USB 2.0 circuitry is different. In a desktop computer, the easiest thing to do is to add a new ports card, containing one or more USB 2.0 ports, plugging it into one of the computer's internal PCI bus sockets. Sometime in 2009, USB 3.0 adapters and devices should come to market. These could operate at speeds up to 10 times the speed supported by USB 2.0.