This 3-ports USB hub is the ideal companion for laptop or desktop computers.. Perfect for connecting USB 1.1 or 2.0 peripherals such as USB mice, USB Portable Hard Drives, USB CD-R/RW or DVD-ROM drives and USB 1.1 hubs. Allows simultaneous operation of up to three separate devices all attached to a single USB port.. External USB devices solve the troubles that the USB port is not enough, and bid farewell to repeated plugging.. No need to install drivers, plug and play.