I built one of these, and it works great! It's a relay built into a power outlet that lets you control any 120v devices with the power button on your computer.
http://home.bendcable.com/werstlein/
He could plug all the "extra" power supplies into it, and when the main computer power supply gets turned off it would siwtch off all the others. It would also turn them all on when he turns on his main computer.
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I built one of these, and it works great!
It's a relay built into a power outlet that lets you control any 120v devices with the power button on your computer.
http://home.bendcable.com/werstlein/
He could plug all the "extra" power supplies into it, and when the main computer power supply gets turned off it would siwtch off all the others. It would also turn them all on when he turns on his main computer.