... 3.Fast delivery time 4.Reasonable price USB hub,car wheel shape, mini usb hub1) 4 usb ports, each port can provide electric ... current up to 500MA. 2) Use the second generation usb hub controller. 3) No driver required, really plug and play. 4 ... up to 480Mbps 5) Wide used for USB devices ,such as U-disk, SD card,USB mouse,keyboard,MP3, MP4, digital camera.