Product Description of iPower TurboCharge + USB Charging Adaptor
What's in the Box:

Faster charging time
The iPower TurboCharge+ USB Charging Adapter is your compact solution to charge your smartphone two to four times faster. This is possible with the device’s TurboCharge+ feature, output current of 700mA-2100mA, plus input and output voltage of DC 5V. In short, this charging adapter helps to raise the charging efficiency of your USB-enabled AC adapter and USB charging cables. Please note that the sync/charge cable is not included.

Small but versatile connector
This iPower TurboCharge+ USB Charging Adapter may look simple and small, but it is a versatile connector. It helps charge your smartphone and other portable devices (with USB connectivity and cables) faster using regular PC/Laptop USB charging ports and AC adapters. For example, Samsung devices have an AC adapter that connects to the device using a USB cable. The iPower TurboCharge+ USB Charging Adapter should be placed in between the cable and AC adapter or in between your PC/Laptop USB port and charge/sync cable to work.Function details
Besides amplifying the speed of your charge and saving time, the iPower TurboCharge+ USB Charging Adapter also allows you to transfer data without charging. When the LED indicator is turned off, the device is ready for data transfer. The blue LED indicator means you can charge different types of USB enabled portable devices.