ELEGRP adapter plug convers 1 outlet into two 125V AC Outlets + two Type A USB Ports (total 4.2A). This USB outlet extender can power and charge all your 4 devices at once without blocking.The plug-in transforms your regular outlet into an efficient, multi-purpose charging station.This grounded outlet adapter plug turns one standard plug outlet into 2 outlets and two fast-charging 4.2A USB ports in total. USB A wall charger can detect charged devices and deliver optimum charging speed up to 4.2A (single port up to 2.4A,12W max).They are ideal for charging cell phone, tablet, laptops, power bank, etc. This USB outlet adapter is compact and lightweight design to fit into luggage and briefcases, no need to carry extra charger plug for your traveling, ideal for travel and business trip. Meanwhile wall outlet expander with USB port is very useful for your household appliances at home or office. Outlet splitter can be used in any indoor place with socket, especially for the bedroom, college dorm room and hotel.