The Prime PBUSB242 2-Outlet 2-Port 2.4A USB Charger - White is a 2-outlet wall tap that also provides 2 USB charging ports. The design is great for saving space, leaving room for 4 devices instead of using up an outlet for each device you would be charging. The USB charging is faster than the standard USB chargers, and the red and green charging indicator lights let you know when your devices are fully charged and ready to be used.