Lindy USB 2.0 Smart-hub, 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, Compatible with all USB 2.0 and USB 1.1 enabled computers and devices, Dimensions: 40 x 70 x 25mm (WxDxH)