Throughout my use I had no issues with the surge protector at all. Even when utilizing all four AC ports and all four USB ports the protector never even got warm. Using a USB multi-meter I was able to test the output of the USB ports and can confirm the protector produced 2.41A from a single port at a constant 5.1V which is well within spec. I like that the AC ports are spaced to accommodate those big annoying wall wart chargers.
Overall this is a well made surge protector with many convenient additions to the traditional power strip.
If you are interested in purchasing one of these surge protectors they can be found here.