ELEGRP adapter plug converts 1 non-grounded two pin 125V AC outlet into two grounded 125V AC Outlets + One Type A USB Port (Max 2.4A,12W ), + One Type C USB Port (Max 3A,15W ), perfect for older houses or offices with AC wall outlets that can not accept grounded plugs. There is an extendable metal grounding tab to fit neatly under the outlet plate screw and provide a proper grounding for safety. 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 wall charger can detect charged devices and deliver optimum charging speed up to 4.2A (single Type C port up to 3A,15W 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 travelling, 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.