The 3-Usb ports with smart IC technology provide fast, efficient and simultaneously charging of small devices, total 3.1a and auto 2.1a per port, max. The 268 Joule surge suppression rating provides surge protection for all outlets and USB ports on the power strip is ideal for small devices and appliances such as smartphones, tablets, personal computers and cameras. Built with 15a circuit breaker for overload protection of all outlets. Tested to be plugged-in over 10, 000x and flame retardant outer shell protects from temperatures up to 750 C. Ul listed and FCC certified. The non-slip pads are perfect for desktops and bookshelves, the rubber non-slip pads protect hard surfaces from scratches while preventing unwanted movement.