Very nice wall charger overall. Very compact size, most 4 ports charger are very bulky but not this one. Decent power output of a combined 4.8A to charge two tablets or four smartphones or smaller devices. Nice design with worldwide power connector included. However the charger do a small buzzing noise when connected on the wall outlet but no USB devices connected. This is a very typical issue with average quality electrical components, it's not a problem really as cheap components can last very very long too, but the side effect is this buzzing noise. Otherwise this is a very great charger and overall I recommend it. Sample received in exchange of my honest and professional opinion.
Thanks for your good evaluation.We will try our best to make every customer satisfied with our products.