okay guys, listen up. the surge protection in a desktop PC is inherent in the design of the supply, it is not something that is added later. it's called voltage regulation. in the "old days" you would have transformers and ballast tubes to "regulate" the voltage. then along came zeners. but today we have fast acting "LM" series of IC regulators that can react to very fast pulses. these devices are an integral part of the supply. when they "blow out" you replace the entire supply. do yourselves a favor and take apart a "surge protector" outlet strip. all you will find is a couple of inductors and a couple of capacitors. yes, they will limit surges but only by a few volts and they react v-e-r-y s-l-o-w-l-y. no, a PC DOES NOT require a separate device to limit surges.