Can a 20- pin power supply run a 24 pin motherboard?

Posted on 2007-10-18
Last Modified: 2013-11-09
I am confused as to what the readon is for the 24 pin vs the 20 pin power suppluy on the Asus motherboards.   Both still have the 4 pin 12 v extra connection.   BUt will a 24 pin (plus the 4 pin 12V)mohterboard work with a 20 pin (plus the 4 pin 12V) power supply.   How can I tell if a case with the power supply included will be a 20 or a 24 pin power supply if I am buying it over the internet?  Is that what the 2.01 on the power supply details is?
Question by:syssolut
    LVL 39

    Accepted Solution

    You can always to use this adapter when needed for 20 to 24 pins:

    The differences are in link below:
    LVL 14

    Assisted Solution

    by:Brad Groux
    Generally if you buy a case with a built-in power supply it should tell you in the item description the information about the power supply... such as how many watts it is and how many pins it has. If it doesn't mention the number of pins then call their support line to verify. The same can be said for your motherboard, the item description should include the number of pins required for power. has fantastic support and can tell you right away if the parts you are buying are compatible for one another.

    As a side note, power supply's that come with cases are generally very low in quality and go out after only a few months use and many are DOA (dead on arrival). I'd recommend buying a well reviewed power supply and a case of your choice and then replacing the included power supply (if any) that comes with the case you purchase.
    LVL 91

    Assisted Solution

    here the list of the PS versions :
    and as you can see, from V2.0 it has the 2x 12 pin Power connector
    >>  How can I tell if a case with the power supply included will be a 20 or a 24 pin power supply if I am buying it over the internet?   <<   by asking them what version of PS is in there
    LVL 2

    Expert Comment

    Usally all the mtbs works well with 20 pin power supply. If you have the high end vga card, usb drives that requires power supply from the mtb are only effected with 20 pin power supply. If you are going to buy a low end motherbaord with on board vga and u r not goin to use any external usb drives that requires inbuilt power u may use 20 pin power supply also.

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