All in One USB Hub,All-in-one design,with high speed usb cable,plug and play,automatic identification,no need deriver. 1.Extend one USB port to four autonoomous working ... and convenient for charging your digital devices.3.All-in-one design,with high speed usb cable,plug and play,automatic identification,no need ... 2.4 and Mac OS 8.5 and upgraded version. All in One USB Hub