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    Do modern ATX power supplies provide 3.3V on SATA connectors?

    Discussion in 'Desktop Hardware' started by Mr.Koala, Jul 20, 2015.

  1. Mr.Koala

    Mr.Koala Notebook Virtuoso

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    Don't have any multimeters around so I'll just ask here, are the 3.3V lines still powered, or are they simply left dead?

    Was Googling something about SATA DevSlp and noticed DevSlp reuses a 3.3V pin on the SATA power connector for DevSlp signal so the main SATA data interface can be turned off. However this is in conflict with normal 3.3V power.
    Does that mean the 3.3V on modern ATX supplies is not connected? I don't recall doing anything special after connecting DevSlp enabled drives to desktops and they work just fine.
     
    Mr.Koala, Jul 20, 2015
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  2. Jarhead

    Jarhead 恋の♡アカサタナ

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    Jarhead, Sep 2, 2015
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  3. Mr.Koala

    Mr.Koala Notebook Virtuoso

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    The PSUs do have 3.3V output. It's still used by the mobo. But is it connected to the SATA power connector?
     
    Mr.Koala, Sep 3, 2015
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  4. Jarhead

    Jarhead 恋の♡アカサタナ

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    Jarhead, Sep 3, 2015
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