USB Smart Adapter
Phones have different needs when it comes to charging. The phone checks its power source to be sure it will not by damaged by over powering and sometimes to prevent it from charging from different brands of chargers. Almost all devices are different when it comes to this. The Smart Adapter will communicate with the two, the power source and phone, and make the correct adjustments to the power source meets the charging requirements for the phone. The thing is that currently ALL USB ports are 5v, but some devices want 0.5 amps and other want up to 2 amps, the smart chip will sometimes tell the device what to expect so that it know and will then accept the charge.