Power Over Ethernet (POE) with an ATX PSU

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ATX Pinout

http://t0.gstatic.com/images?q=tbn:HVDY-2IQPUWb_M:http://i435.photobucket.com/albums/qq79/Ughadoo/Conectores/20-pin_ATX_connector.png&t=1

Edit conflict - other version:

http://t0.gstatic.com/images?q=tbn:HVDY-2IQPUWb_M:http://i435.photobucket.com/albums/qq79/Ughadoo/Conectores/20-pin_ATX_connector.png

Edit conflict - your version:

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Shortcut black and green:

http://www.jestineyong.com/?p=267 http://www.jestineyong.com/wp-content/uploads/2007/09/atx-power-bypass.jpg