Solved: Power Supply question

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gct1

Thread Starter
Joined
May 10, 2011
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HI
Just looking at different ATX power supplies and noticed that some ATX supplies have a white cable -12V on the 20 pin connector and some don't. Does this mean that certain motherboards will work and others won't depending on the power supply? Why is this not specified when buying a new one?

Any clarification would be greatly appreciated.

Cheers

GCT1
 
Joined
Jul 19, 2005
Messages
11,670
The white lead was a -5V lead not -12V. Older boards used the -5V lead, but I'm not aware of any modern boards that still use the -5V lead.
 

Triple6

Rob
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Dec 26, 2002
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52,933
Pin 20 was the -5 volt, its simply not used on newer systems and has not been included in the ATX12V 1.3 spec and newer. Its not needed as its primary use was ISA slots/cards. Pin 14 is the -12 volt and its still present.
 
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