A USB hub connects to a PC or laptop and provides additional USB ports for connecting multiple peripherals or other devices simultaneously.The Lindy 4 Port USB 3.0 Hub provides convenient access and effective power management for USB peripherals and storage devices. Capable of data transfer speeds of up to 5Gbps, the hub is also backwards compatible with USB 2.0 and 1.1.The hubs individual On/Off switching ports can help reduce overall power consumption and are perfect for accessing external hard drives or other periodically used devices. An optional power supply can be connected for use with high current USB devices.