... to your computer's USB port for efficient syncing and charging or to the Apple USB Power Adapter for convenientcharging from ... 5V DC,2.1ALength: 90cmHow to use:1. Insert adapter of this cable into the power socket, connect the other ... Pull out the adapter after using.3. When the data is under transfering, make sure the computer and the iphone( ... stop using it! Visible Flashing Cable with iphone adapter