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Jumper to turn on power supply w/o motherboard?

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Old 10-07-2007, 08:24 PM   #1
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How do I fool my old power supply to come on without being attached to a motherboard. I am trying to recover data from an older hard drive. I have jumpered it to slave, and have a new computer to plug it into. However the new computer power supply plug does not match the old big molex type connector on the old hard drive. I do have an extra power supply that will connect, but without a mother board it won't power up. I suspect there is a way to jumper pins on the large 20 pin power supply connector to turn on the power supply. Any one know the correct pins?

Thanks.

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Old 10-08-2007, 01:38 AM   #2
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Hi Russell and welcome to TSF.
Yes, take a length of wire and bare both ends and put one end into the connector for the green wire and touch the other to the connector for a black wire. This is the equivalent of pressing your power button.

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Old 05-11-2008, 10:10 AM   #3
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This is fine for an ATX , but how do you do ( manually turn on ) an old AT power supply ?
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Old 05-11-2008, 04:33 PM   #4
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http://pinouts.ws/at-power-supply-pinout.html
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