I have this charger gekauf because I had expected that the outputs can warden USER to load loadable from all USB devices. Unfortunately, I have been disappointed since. Two ports with 2 A charging current can warden used exclusively by Apple iPad or iPhone, other devices (Android tablets, smartphones) are, if at all, only extreme load slowly. Smartphones with Intelligenm USB charging port that could use a 1.2 DCP or CDP USB port to the USB Battery Charging Specification ganricht be supported but only with the USB 2.0 standard charging current of 0.5 A loaded. This becomes noticeable in the very long charging time.
So if you want to load a BlackBerry, Android, Windows Phone or older Symbian smartphone can not do much with this charger