How to use the SMPS power supply of PC without using the motherboard?

Posted on 2009-04-26
Last Modified: 2013-11-09
I have two SMPS power suppliy boxes with me. One I use with the computer and the other is idle but is working fine. Now since I have requirement of one more connection for extra hard drive, I want to use the idle one SMPS for the same instead of  buying a new enhanced one. Now since the motherboard has only one main socket which I am already using, How can I make the other SMPS active without inserting the SMPS pins into motherboard. Which are the wires which I need to short to make it Operative?
Yes I understand that it is recommended to use the new one to save my hard drive for proper shutting down, But I can use the existing one for DVD player etc.
Please help.
Question by:abhinavchunmun
    LVL 33

    Accepted Solution

    You mean like a 20/24 pin power supply?
    Just make a jumper to short the green wire to a black wire.

    There are several mods floating around for different ways to wire it in-line with the other one, so they go ON and OFF with the front button.
    LVL 33

    Expert Comment

    Here is one of them. The CPU direct link can be funky is you are not a member, but paste the the search phrase below (including the quotes) into Google, and it will get the whole article.

    "Computer Power User" Dual-PSU Mod

    Dual-PSU Mod         
    February 2008 ? Vol.8 Issue 2
    Page(s) 38-41 in print issue
    LVL 33

    Expert Comment

    Thank you much.   : )

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