GooDGo usbotg193 30 Pin to USB Host OTG Adapter Sync Charge Cable for iPad 1/2/3, White Usb hub - sync - charge connection kit for iPad 1,2,3 Connects your usb flash drives, mic and keyboards Works with external hard drives with external power source for the hard drive Usb ports support hot-swapping plug-and-play function Compatible with iPad 1, iPad 2 and iPad 3