The USB standard was born more than 20 years ago, marking what would be the beginning of a new era characterized by two things: the arrival of a common model and the tedious task of connecting devices in the right way. Throughout his life he underwent considerable evolutions, being the most significant the arrival of USB-C, a reversible model that looks the same as the original: becoming a standard, but this time, facilitating the connection process through reversibility.
But Why was not USB reversible from the beginning? We know the answer thanks to Ajay Bhatt, one of the co-creators of the original USB standard, who told a story about why NPR.
Bhatt began working with his Intel team with the primary goal of resolving a very common situation in the 1990s: where do each of the cables, plugs, and connectors go? In addition, as I mentioned earlier PCWorld, his interest in this development increased due to his desire to help his family members, who called him whenever they could not print something.
When they resolved this problem and the USB connector was set, they concluded that the greatest annoyance was the lack of reversibility. The problem was that if USB were supplied with reversibility, it would require twice as many cables and circuits, which would have doubled the production costs of the connector – and associated devices.
USB came on the market to replace the gigantic serial and parallel connectors of the era, but because of its success, was able to move the Apple FireWire standard, which was more expensive but also faster.
Currently, with USB-C finally solved these problemsand although adoption is still slow, it is starting to become a real alternative for mobile and portable devices. And all thanks to the path started by USB-A.