Come and see our amazing products. Robot Design 4 Usb Ports 2.0 new robot hub. Plug and Play, no need driver. 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. Perfect feature 4 port high speed USB HUB. Friendly ergonomic design easily portable. 5V 500MA. Built in short circuit, over voltage, over current and over temperature protection to ensure safty. Pls confirm further with us if any query about packing info, inventory status and time schedule.