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Seemingly complex Power Supply question

P

Polyp

n00b
Joined
Oct 6, 2009
Messages
15
I have a Silverstone SFX 450w PSU. It is a standard (non-modular) powersupply.

In an effort to make the innards of my mini-ITX cleaner, i cut off excess cables and used heatshrink to prevent shortages.

So I cut off 2 sets of wires:
1) the entire molex series. (Because I have no molex devices)
2) a series of wires that had a pair of 4-pin plugs at the end. (I thought this plug was used for oldschool p4 systems)

I wrongly assumed these 4-pin plugs weren't used for the motherboard because there was also a cable that had a large ATX looking plug that also had a 4 pin extra plug on that cable. And on my motherboard (Gigabyte H55N) there is the standard large plug that is 24 pins and then a small 4 pin plug. So I just thought it would all work out...

However, when I went to plug everything up, the large motherboard plug was actually 4 pins short. The large plug was only a 20-pin plug! And it looks like I have to use the "extra" 4-pin plug to fill up the 24-pin socket on the motherboard.


So... am I screwed? Do I need to get a new powersupply? I don't have anymore 4-pin plugs from the powersupply to plug up to the 4-pin socket on the mobo.



I would greatly appreciate any kind of input on this.


Thanks
 
You can try to solder the wires you cut back together, but other than that, you're screwed.
 
edit: misread that, you cut off the ATX12v 4-pin connector used to power the processor.. oops, yeah, you're screwed unless you can get it soldered back together.
 
Ive had a simmilar issue in the past except it was that the old PSU simply did not have a 12v P4 Connector as it was known. so my solution was simply to cut off the 4 pin connector from an old burnt out power supply and splice it in with one of the existing 12v (yellow) wires that was heading out to power the other devices, and splice off existing ground wires (black) as well..

You're not "Screwed" per say... even if u dont have enough cable to solder back on to its original connection, with some creative engineering you could make it work with what you have. just depends on how much work its worth to you to fix it vs just buying another power supply for you to cut up (only a little more carefully this time)
 
Polyp said:
However, when I went to plug everything up, the large motherboard plug was actually 4 pins short. The large plug was only a 20-pin plug! And it looks like I have to use the "extra" 4-pin plug to fill up the 24-pin socket on the motherboard.
Click to expand...
If there is a 20 pin plug with a four pin hanging off the side of it then that is indeed almost certainly what it is for. Post pictures if you are unsure.

Note that said four pins are NOT the same as any other connector in a PC so don't try to plug them in anywhere else.

So... am I screwed? Do I need to get a new powersupply? I don't have anymore 4-pin plugs from the powersupply to plug up to the 4-pin socket on the mobo.
Click to expand...
Assuming you left some slack you can probablly rejoin the wires you cut using whatever method of joining wires you prefer (solder and heatshrink would be my method of choice but you could probably also use crimps or even terminal block)

If there is not enough slack there may still be ways of fixing things.

Again post pictures if you are unsure of anything.
 
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