A USB, Universal Serial Bus, is a mechanism that allows other devices to be connected with a solitary uniform interface socket.  USB devices are able to connected and disconnected from the computer without having to shut it down

Some types of USB devices include flash drives, digital cameras, speakers, microphones, sound cards, Ethernet adapters, modems, keyboards, laser printers, and much more.

The signaling for this device can be at full, low, high and super speeds.

These USB connectors are able to be plugged in to the peripheral devices but they must be plugged in correctly, being that the USB port only accepts a USP cable that is shaped in a different way.

USB, Universal Serial Bus, cables are mechanisms that are designed to allow a variety of different external devices that increase communication capabilities to be connected to a computer or other data communications device. These mechanisms use a uniform interface socket to connect to the computer. USB cables and hubs advance plug-and-play capacities by permitting the computer to have numerous devices connected to it without having to shut it down or turn it off.

Some of the types of devices that can be operated using USB cables and hubs are monitors, mp3 players, mice, scanners, printers, keyboards, etc.