One of the tech world's most archaic aspects is that plugs don't universally connect to ports -- even the ones that have the word "universal" right there in the name. Aside from power cords with two prongs of equal size, the most prominent plug that can be reversed and connected is Apple's Lightning connector, a much less widespread connector type than standard USB. Now, with the next generation of USB, everyone's favorite serial bus will be reversible and connect any way you jam it in.