The AUKEY Quick Charge 3.0 4-Port USB Wall Charger offers fast-charging technology. When you plug in a device that’s compatible with Quick Charge 3.0, this wall charger will power it up four times faster. Not only that, but you can use this USB charger to simultaneously power four devices. With three AiPower USB ports and one Quick Charge 3.0 USB port, this fast charger keeps your smartphone, tablet, and more fully charged. The AiPower ports on this wall USB-charging device provide adaptive charging. So when you plug in your five-volt devices, this outlet delivers 2.4 volts worth of continuous power. In fact, it’s actually able to provide a total power output of 4.8 amps. At just about 2.5 inches square, this wall charger is compact enough for you to take to work at the cafe.