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Thread ID: 125533 2012-07-04 09:07:00 CPU ATX 12v connectors bk T (215) Press F1
Post ID Timestamp Content User
1285927 2012-07-04 09:07:00 Most late model Motherboards have the 2 x 4pin ATX power connectors as per snapshot attached:

3970

This friend of mine bought an Asus Desktop PC from Taiwan for his teenage son and he plugged it into the wall-outlet, turned ON the switch and can be expected killed the PSU instantly as Taiwan is using 110 V.

So, I got the chance to replace the PSU for him. Surprisingly, the Asus PC is using a 320W PSU with only 1 x 4 pin ATX connector! Could the PC work with only 1x4pin ATX power?
bk T (215)
1285928 2012-07-04 09:53:00 This is normal, it's a P4 12V connector (as opposed to the 8-pin EPS12). It's dependent on the CPU types supported by the board which connector is used, more than anything. Most powersupplies will either have an 8 and a 4 pin, or a 4+4. inphinity (7274)
1285929 2012-07-04 09:55:00 Yes. You will find that most boards that use less powerfull cpus will only use 1, 4pin atx power connector. That is why the cord is split in 2 so that it is compatable with both. Slankydudl (16687)
1285930 2012-07-04 10:35:00 If using only one connector, does it really matter which one to plug in? bk T (215)
1285931 2012-07-04 11:04:00 no but the point is if it wasnt 2 4pin plugs but instead 1 8pin plug it would not be compatable with motehrboards that only use 4pins Slankydudl (16687)
1285932 2012-07-04 11:11:00 Sorry, I mean the header on the MB. does it matter which set of the 4-pin socket to use? bk T (215)
1285933 2012-07-04 11:16:00 Im not totally sure what you mean. Slankydudl (16687)
1285934 2012-07-04 12:45:00 He's saying, if the PSU only has 1x 4-pin connector as opposed to a 2x 4-pin or a 1x 8-pin, which side of the 8-pin socket should the single 4-pin plug go into.

To which the answer is... it should only fit in ONE side. Note how some of the holes are dead square while others have a rounded edge? this is to prevent them from being installed wrong.

Sure, you can force it, it's just plastic, but there will be one way it is designed to fit.


Whether or not you should actually run it with a PSU that only has 1x 4-pin plug is a good question.
Agent_24 (57)
1285935 2012-07-04 22:53:00 He's saying, if the PSU only has 1x 4-pin connector as opposed to a 2x 4-pin or a 1x 8-pin, which side of the 8-pin socket should the single 4-pin plug go into.

To which the answer is... it should only fit in ONE side. Note how some of the holes are dead square while others have a rounded edge? this is to prevent them from being installed wrong.

Sure, you can force it, it's just plastic, but there will be one way it is designed to fit.


Whether or not you should actually run it with a PSU that only has 1x 4-pin plug is a good question.

Thanks. That's exactly what I meant. Sorry for not making myself clear.
bk T (215)
1285936 2012-07-04 23:07:00 I ran my i3 system with just the four pin ATX connector just fine. I have since upgraded the PSU though which has the two 4-pin connectors. pcuser42 (130)
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