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Solved: Power Supply question

Discussion in 'Hardware' started by gct1, Nov 1, 2011.

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  1. gct1

    gct1 Thread Starter

    Joined:
    May 10, 2011
    Messages:
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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
     
  2. win2kpro

    win2kpro

    Joined:
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    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.
     
  3. Triple6

    Triple6 Moderator

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    First Name:
    Rob
    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.
     
  4. gct1

    gct1 Thread Starter

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    Thanks. Good to know.
    Cheers
    GCT1
     
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