Modernize your electrical outlets with U-Socket, the 1st change to the wall outlet in 85 years! Since 1927, the wall outlet has consisted of hot, neutral & ground plugs that provide 110V of AC power. U-Socket adds 2 USB plugs that also provide 5V of DC power. Now your mobile device charger is conveniently built right into the wall! Save space & get a clean, uncluttered look. Also reduce your energy costs because unlike external chargers, U-Socket only comes on when you need it and shuts off when you don’t. Designed & Made in USA. Listed to UL, CSA, NEC & IEC standards.