Features Add 4 AC Outlets and 4 USB Charging Ports A total power output of 2300W enables you to power up to four appliances and four USB-powered devices simultaneously. Premium Quality Built-in high-quality components, enhanced circuitry and high temperature (up to 750?) resistant and flame retardant housing keep you and your devices safe. Safe and Reliable Provide over current protection, over voltage protection, over heating protection, short circuit protection, safety shutters, surge protection, protection against lightning strikes and overload protection. Built-in power switch and 10 amp circuit breaker offer power control and overload protection over all outlets. Rated at 400 joules, four AC outlets can defend against voltage fluctuations, surges and spikes. 4 USB Charging Ports Intelligently deliver the optimal current to USB-powered devices, up to 5V/2.4A per USB port. Charge up to four devices simultaneously with a total output of up to 5V/4A. Delicate Design Compact and space-saving design keeps your desk neat and organized. Well-spaced outlets enable more convenient plugging and less conflict between plugs. Easy to Use Equipped with a master power switch, a green LED indicator and a 4.92 ft heavy-duty power cord. Six anti-slip silicone mats on the bottom make it easy to stay put.