USB cables are wonderful things, since they allow so many different products to be connected together. Of course, the humble USB connector isn’t without its own set of problems and we often find ourselves trying to push the plug in several times before we realize that we’ve got it the wrong way around. Of course, that wouldn’t happen if everybody out there just used this concept Double USB plug, which is a USB plug design that can work even if you flip it upside down, thanks to a spring-loaded mechanism inside the connector. Of course, such a design would probably increase the rate of failure, since there are more parts, but we must say the convenience probably is worth it.