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Thread: ATX PSU's

  1. #1
    Join Date
    Jan 2012
    Location
    Behind the keyboard
    Posts
    259

    Question ATX PSU's

    Okay the white cord is minus 5 Volt but why is this voltage required for?
    I am aware that older CPU needed this voltage but this is a archaic practice. even back in the early 90's

    More modern ATX PSU have dropt this but the older one's have this 'feature' still.

  2. #2
    Join Date
    Feb 2012
    Location
    Ioannina , Greece
    Posts
    180

    Default

    The -5v line goes to the ISA bus and is needed for some older isa cards, most notably the ROLAND LAPC-I and some of the first 8-bit SoundBlasters ... If you have none of these cards then you can use a psu that lacks the -5v line.

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