https://en.wikipedia.org/wiki/USB https://en.wikipedia.org/wiki/USB > USB was designed to standardize the connection of peripherals to personal computers, both

https://en.wikipedia.org/wiki/USB https://en.wikipedia.org/wiki/USB > USB was designed to standardize the connection of peripherals to personal computers, both to communicate with and to supply electric power. > USB has a strict tree network topology and master/slave protocol for addressing peripheral devices; those devices cannot interact with one another except via the host, and two hosts cannot communicate over their USB ports directly