K-USB / USB

There are some problems with the present USB when we use them. First, it’s not good to grip when inserting them into computers. Second, if there are more than one USB on a computer, we don’t know which exit window should be clicked.
Therefore, designing an exclusive button on USB will solve these problems.
Pressing the button, a small gap between it and the USB’s main surface would become a slip resistance place for fingers, and it makes the USB much easier inserted into a computer.