4 Port USB hub with iMAC flavors. Provides a simple, cost-effective method of connecting USB devices to your computer such as scanners, printers, digital cameras, or any other USB devices (up to 127 devices). Comes with 2 Amp DC power supply which provides sufficient power for all connected devices.Also comes with a 5ft USB A to B cable, True Plug and Play, no software needed.USB 1.1 compatible.