USB (Universal Serial Bus) allows connecting various devices complying with this standard to host computers. This standard was developed to allow peripherals to be connected to computer using unitary interface socket. Thanks to this standard devices can be connected and disconnected without turning off the device or rebooting computer.

USB has a great option of giving power to low-consumption devices, which allows you to charge your phones, tablets, etc. And there is no need to install special drivers to connect and work with the devices on the computer.

Some historical facts about USB

The USB 1.0 specification was released in 1996. It was aimed towards simplifying software configuration of communication devices and to reduce the number of connectors at the back of a computer.

The USB 2.0 specification was introduced in 2000 and was standardized by the USB-IF by the end of 2001. 

The USB 3.0 specification was born on November 12, 2008. It is up to 10 times faster than its predecessor - USB 2.0.

The USB 3.1 specification was announced on July 31, 2013. It increases the signalling rate to 10 Gbit/s, twice more than USB 3.0. USB 3.1 is backwards compatible with USB 2.0 and USB 3.0.

Device classes

USB defines class codes in order to identify device's functionality and to activate the needed driver. As a result various devices from different manufacturers, complying with a given code, are supported by device driver writer.

Here are some examples of most popular USB devices

USB keyboards, USB mouse, USB drives, USB webcams, USB scanners, USB dongles, USB printers (check the new printer sharing guide), iPods, USB DVD drives, USB speakers, USB microphones, USB sound cards, memory card readers, etc...

Did you know?

The majority of USB devices can be accessed from a remote computer just as if they were physically connected to it with the help of USB Network Gate.