Technology is a cool thing. These power strips will automatically turn off whenever a 10%+ drop in current to the main outlet is detected, and automatically turn on when an increase of 7 watts or more in power to the main outlet is sensed. In other words, plug your computer into the main outlet, and its peripherals into any of the other six. When you shut down your computer, all of the peripherals will also turn off. When you turn on your computer, the peripherals will all turn on. You can buy it from the Energy Federation Inc. web site and other places.