Vulcan VPS11Q1PS Portable Surge Protector with Space-Isolated Outlets Three Space-Isolated Outlets: Our unique Space-Isolation Outlet design positions each outlet independent of each other in order to maximize usage of all outlets at the same time  even with bulky power adaptors. Two USB Charging Ports: High power USB power output at 1500mA provides even more versatility to charge your smart phones, tablets and other portable electronics. Foldable Plug: Designed for easy portability, the plug folds for convenient storage and transport. Integrated Surge Protection: Safely charge your devices with 612 joules of protection.