The USB-C to USB Adapter lets you connect iOS devices and many standard USB accessories to your Mac, iPad, or iPhone with a USB-C or Thunderbolt 3 (USB-C) port. Plug the USB-C end of the adapter into the USB-C or Thunderbolt 3 (USB-C) port on your Mac, iPad, or iPhone, then connect a flash drive, camera, or other standard USB device. You can also connect a Lightning to USB cable to sync and charge your iPhone, iPad, or iPod.