The USB 3.0 3 + 1 Port Hub contains USB 3.0 port x 3 + USB 2.0 Port x 1. It allows you to connect up to 4 USB 3.0/2.0 devices. With the speed advantage of USB 3.0, it offers a theoretical data transfer speed up to 5.0GBit/s. That's ten times faster than the USB 2.0 speed of 480MBit/s. It is a perfect USB 3.0 hub for everyone.