USB Hub
A USB hub is a hardware device that expands a single Universal Serial Bus (USB) port into multiple ports, allowing users to connect several USB peripherals to a computer or other host device simultaneously. It functions as a splitter, managing data and power distribution to connected devices such as keyboards, mice, external drives, and printers. Hubs can be powered (with an external power source) or unpowered (bus-powered), affecting their ability to support high-power devices.
Developers should learn about USB hubs when working with setups requiring multiple peripherals, such as development workstations with external monitors, keyboards, and debugging tools, or in embedded systems testing with various USB devices. They are essential for expanding connectivity on laptops or desktops with limited USB ports, ensuring efficient workflow and device management in tech environments like labs or home offices.