I have received a few questions about what a UPS is, I will go over it real quick. An UPS or Uninterrupted Power Supply is pretty much a surge protector with a battery backup, so let's say you leave your system on all of the time and the power goes out, most UPS Systems have software you can install which will shut down your computer properly, so your system is less likely to suffer from a power surge. Also the battery doubles as a low-grade power conditioner which means your equipment receives proper voltage from the battery, and the battery is recharged by the outlet. Also in case of a nasty enough power surge, it will fry the battery not your equipment, a bad enough surge will fry the equipment as well, but it takes a lot more than it would take to outdo a surge protector on its own. Also UPS systems "claim" they save electricity, but I have been unable to verify that. -Matt