The USB 3 is in its infancy. The USB 3.1 is already underway and it will not be compatible with USB 3.0. In contrast, the USB 3.1 will plug more easily, have a greater stability and will especially a standard imposed by Européene union. Apple has now the obligation to join the USB 3.0, USB 3.1 and micro USB. Wait can be a little more information on the USB 3.1 standard. Pay attention to the Z87 chipset Intel of the first production, they are a bit unstable on USB 3. But it was quickly rectified (Chipste Z87 C2).