2.4A USB charging per port. Charges multiple brands of phones & tablets (including all iPhone, iPad, etc.) Mobile devices such as tablets and smart phones are critical tools for mobile professionals, but keeping all of your devices charged and ready for action can be a hassle. With the Belkin 4 Port USB Charger, there's no need to plug into a PC or look for a wall plug adapter. The Belkin USB charger features 4 powered USB ports that allow you to plug in multiple devices with just a USB cable. Offering a slim, sleek design that blends seamlessly with today's modern electronic devices, the Belkin USB charger is both practical and convenient for any desk, conference room or home office.