Universal Serial Bus

USB is a protocol to usually attach external devices like keyboards, mice, printers to desktops, laptops and sometimes smartphones. There's lots of different USB standards and Thunderbolt uses the same cables in some instances. You can use docks or hubs to connect multiple (USB) devices to a single port.

• USBDeview – device viewer showing install dates, speeds, ports and other information about USB devices.
• Microsoft USBView – small tool from the Windows driver SDK to view USB information.