A USB hub is a device that expands the number of available USB ports on a computer or other electronic device. It allows multiple USB devices, such as keyboards, mice, printers, and external hard drives, to be connected to a single USB port on the computer.
A USB hub typically has multiple USB ports, ranging from two to as many as 16 or more, and may include both standard USB-A ports and newer USB-C ports. It connects to the computer via a USB cable and draws power from the computer or from an external power source, depending on the hub's design.
USB hubs can be powered or unpowered. Powered USB hubs have an external power supply that provides additional power to the connected USB devices, while unpowered USB hubs draw power solely from the computer's USB port. The number of devices that can be connected to a USB hub may depend on the hub's power rating and the power requirements of the connected devices.
USB hubs are useful for expanding the connectivity options of a computer or other device, especially for devices that have a limited number of built-in USB ports. They are available in various sizes and configurations, including portable and desktop models, and may include additional features such as USB charging ports and data transfer switches.
