USB stands for Universal Serial Bus. USB is the most common type of computer port used in today's computers. Apart from this, it is used in many devices for data and energy exchange.

USB, as the name suggests, is a serial connection, meaning that all data is transmitted in bits (parallel buses transmit multiple bits simultaneously).

USB was designed in 1995 and has provided a standardized bus in devices ever since.

In USB, data is transmitted over a pair of cables called "D+" and "D-". These create a differential signal and allow USB to run at high speeds.

USB is also faster than legacy ports such as serial and parallel ports. USB 1.1 feature, Up to 12Mb/s, USB 2.0 up to 480Mb/s, USB 3.0 theoretically 4.8 Gbit/s It can reach transfer speeds of up to .