[Shotty]

Its the fan. I don't understand why people use those, I think they cause more harm than good. The fan runs directly off the xbox 360 powersupply. The thing about the xbox 360 is it monitors power usage and if the wattage that gets to it dips below a certain level it would trigger a system error. The only thing I say is return the cooler and only use it if your xbox 360 freezes due to it being in a hot environment. Use the money on something worth it. Horse Armor anybody, Jokes.