Universal Serial Bus: USB is a solution for PCs for an instant, no-hassle way to connect digital joysticks, scanners, digital speakers, digital cameras or PC telephones to computers.

USB devices can be hot plugged and unplugged without turning the computer off. This is so-called "hot-swapping" capability. USB protocol standards are also designed to support "plug and play", which means that after you connect your device to the computer, the operating system (if it supports "plug and play") automatically detects and installs the device making it ready to use almost immediately.