This flat power strip 15 ft could turn 1 socket into 8 AC outlets and 4 USB ports, can charge 12 devices simultaneously without blocking, keep your desktop organized; You can use the charging tower in any indoor place such as home, office and dorm room,2 types of USB ports can detect charged devices and deliver optimal charging speed, giving you more charging options; idea for USB devices like cell phone, tablet, earphone, etc,Equipped with overload protection, short-circuit protection, over-current protection, and etc; Reliable on/ off switch can automatically shut off and protect your expensive electronics, providing you with a safe and reliable charging environment