Who does not know: every night has the smartphone, tablet and other electronic useless stuff that is now so around with them carries the charger ... I quickly then getting the total cable clutter on the desktop and all power strips are full. By HooToo charger I can load 4 devices via USB and just need an outlet. I regularly use the charger for my Kindle and my S3 mini, both to be charged within the normal time, to be called so quickly or as slowly as with the original chargers. In addition, I also invite more different external batteries and - and that thrilled me most because supplied by the manufacturer without charger - electronic toys and my video camera. Of course, still cable on the desk ... but it looks better. I am completely satisfied, also because the Adapter leaves a strong impression of what today is not always so yes.
I have tested the USB-OTG function works, but I have no use for it at home, since eh all devices can communicate with each other via WLAN. VLT. useful for people who take the adapter when traveling to the hotel, as I am but campers and rarely go see an outlet, I personally do not use this feature and USB OTG's just for me only an addition.
Note: the device comes with a power cord and an OTG cable for the USB charging cable must be ensured itself.