Stylish miniature 4 port USB 2.0 Hub with integrated cable Space saving design - ideal for use with desktop and notebook computers Easy \"Plug & Play\" installation and operation 4 downstream ports with automatic connectivity and speed detection Bus powered from the computer, or self powered from the power supply Compatible with all USB 2.0 and USB 1.1 enabled computers and devices Bus powered, power supply is not included If you have a USB 1.1 interface in your PC or Mac, this USB 2.0 hub is fully backwards compatible, allowing you to use your existing peripherals whilst remaining \'future proof\' when you upgrade to a high speed USB 2.0 interface.