USB is an acronym for Universal Serial Bus, a standard technology that's used to allow devices to connect through a port on a computer. USB devices can be plugged into the computer and recognized by the operating system, without the need to shut down the computer.

A USB hub is like an extension lead for USB devices. It plugs into your computer and lets you connect more devices than your existing USB ports allow. Some USB hubs are powered, others are unpowered.

Universal Serial Bus (USB) is a set of connectivity specifications developed in collaboration with industry leaders. Originally released in 1995 at just 12 Mbps, USB allows easy, high-speed connections of peripherals to PCs that, once plugged in, configure automatically.

WHAT IS USB TYPE B USED FOR? You'll typically find USB Type B ports on larger devices you connect to your computer, such as printers and scanners. You might also have external storage devices or drives that use them. Most USB Type B connectors are at one end of a USB Type B to USB Type A cable.