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Actually, the new computer power supplies can operate without a motherboard if you use a jumper cable to close the circuit. (They just look at the pins on the motherboard so the computer can be the "switch.:") So you can actually wire a switch into the jumper and turn the power supply off. You can find computer power supplies used (there are companies that harvest computers and sell those working components.) [url]http://www.comp-recycle.com/[/url] [url]http://www.lanyoncomputers.com.au/home/index.jsp[/url]
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