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How do I fully utilize both 12V rails?

J

Jackyl

Limp Gawd
Joined
Sep 15, 2005
Messages
174
I plan to buy an Enermax Noisetaker 375W power supply : http://www.cluboc.net/reviews/power/enermax/eg375p-ve/

Now, I will not be using this with a motherboard. Instead, I will hook up a switch to the ON pin on the atx connector to turn it on manually and use it to power 12 HDD's and a dozen fans (can be seen in the disk storage system forums). This particular power supply has 2 12v rails, each supplying 13 and 14 amps. My question is, how do I go about 'using' both rails in my particular setup? Will I have to splice certain wires on the ATX connector to utilize the second 12v rail? I would hate to use a bunch of power splitters on one 12v rail while not using the second one.

Thanks for any help you guys can provide :)
 
One rail supplies only the p4 (+12V) connector, the other rail supplies everything else, so just make up adaptors accordingly.

GL ;)
 
davidhammock200 said:
One rail supplies only the p4 (+12V) connector, the other rail supplies everything else, so just make up adaptors accordingly.

GL ;)
Click to expand...

When you say the P4 connector, do you mean the square shaped connector that has black/black/yellow/yellow wires on the 4th picture on page1 of the review page I linked above?

If so, how do I go about correctly "converting" that to the retangular 4 pin connectors that you normally connect to the HDD or a CDROM? Just a bit confused about which wire should go where since that P4 connector is yellow/yellow/black/black while a normal connector is yellow/red/black/black...
 
i haven't done this in a while, but hacking up some molex splitters should work

you'll need to run the 12v and one ground to the P4 connector, and the 5v and other ground back to splice into the main 20/24 pin connector.

i'd recommend soldering the connections together and taping them up vs. wire nuts or twist-and-tape only.
 
doh.. was gonna pick it up at monarch computers locally but their inventory magically went from "in stock" to the item no longer being in their system at all in a matter of a couple hours. Would have been a nice power supply for the $25 it was listed at. :(
 
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