The USB-C to USB Adapter lets you connect iOS devices and many of your standard USB accessories to a MacBook with USB-C port or MacBook Pro with Thunderbolt 3 (USB-C) ports.

The Adapter support 60W(3A 20V) power, super speed 5Gbps(USB3.1 Gen1 )transmission

Plug the USB-C end of the adapter into the USB-C port on your MacBook  port on your MacBook Pro, and then connect your 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.