Great product! This product is not a USB hub to connect to a computer but a USB charger. It is connected to the mains and we are able to charge 4 phones simultaneously! The product of TOP is that it has 2 "smart" taken that detect the optimum power to charge a device. If you plug an iPhone over the load will be as effective as the charger provided by Apple, which usually is not the case with conventional USB chargers. I tested it by connecting multiple devices of various brands (Samsung, Sony, Apple) and it works perfectly and quickly. I STRONGLY RECOMMENDS this product!