Addendum: I now have a Anker® 40W 5V / 8A 5-Port USB Charger bought and can add:
I'm very satisfied with both. Advantage of the anchor charger: 5 ports automatically adjusts to the device, thanks to the 1.5 m may standard cable plugged somewhere and be tucked into the cable channel of my desk. There occupies more space than the very handy but almost twice as expensive! Tizi gas station, which I always have in my suitcase and my (business) take with traveling. In summary: both products are working properly and have specific advantages