The last released USB 3.0 connection standard keeps PC users to ask themselves and on internet question. So, do you ask yourself question like if you should use USB 3.0 with USB 3.0 enabled devices or does it require a USB .30 cable.
I will try to answer on this question as clear as possible.
Yes, USB 3.0 connection requires an USB 3.0 cable because:
USB 3.0 cable has some extra pins and wires and you can distinguish it from other versions of USB cables by looking at its connectors that are blue colored.
Also, you can use USB 3.0 cables with 2.0 devices and ports, but this will not increase the transfer rate, it will fall back to USB 2.0.
To get USB 3.0 speed, you have to buy an USB 3.0 cable that its a little different at pins than other USB cable. You can use the USB 3.0 cable on devices that use old USB 2.0, but speed rate will not increase. In order to get high speed rates of USB 3.0, you need the USB 3.0 cable and USB 3.0 ports on your computer or other devices. USB 3.0 cables have more internal wires and usually are blue with blue connectors, or black with blue connectors, also USB 3.0 ports on your PC are blue.
Next time when you will complain that there is no difference between USB 2.0 and USB 3.0, please pay attention to these details.