ATX PSU working as AT PSU?

AllGamer

Senior member
Apr 26, 2006
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Anyone know if there's a way to Mod or convert a ATX PSU to work for an old AT Mobo (Pentium) ?

I've noticed some ATX PSU has 1 of the 2 power plugs needed for the old AT boards.

Reason why i'm asking is due the very rare chance to find a good AT PSU to buy.

an on ebay you can't find any good one for over 300w

i need one at least 400w, preferably 500+w (the higher the better) it's for an old server i toy around with.

i had quite a large stash of 300w but eventually all of them are dying off (due overload), so i need to find some good replacements, before my last 3 remaining ones are gone.

i found a few places that sells them online but for waaaaaay absurd prices, twice as much as what you'll pay for the same Wattage in an ATX PSU
 

AllGamer

Senior member
Apr 26, 2006
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now i can finally power up my baby properly :D

it was surviving on old stashed 300w / 200w AT PSU, the original one was 350w, but even that wasn't enough

It's a Full Tower with 16 bays (6)5.25 + (10)3.5 All in use, HDDs (SCSI+ATA+SATA), FDD 3.5 / 3.25, CDRW

Dual P5-233MMX
512 MB RAM (maxed)
256 cache (maxed)

PCI IDE + RAID 66/100/133
PCI NIC
PCI SATA (recently added)
PCI ATI Rage
ISA ATI TV
ISA SB 64
EISA SCSI
EISA NIC

going to make some windows on it, and soup it up with UV and other neons stuff :D

Then paint the Tower with some Art, or something, got tired of looking at it baige for the last ... hmm... 10+ years :r

didn't do it before cuz the more load i put on those 300w/200w AT PSU the faster it died, so i couldn;t do much, now that i can put a good 500+w PSU on it, i can finally power all that stuff properly :)
 

bruceb

Diamond Member
Aug 20, 2004
8,874
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Thats a nice little converter cable .. Did you bookmark the link to all the pinout info ?
 

AllGamer

Senior member
Apr 26, 2006
504
0
76
yeah i did, i could probably rig my own ATX to AT now, following those pin outs :)

and save myself $15 LOL :D it's nothing but... well it affort me half a snack in the movies
 

GalvanizedYankee

Diamond Member
Oct 27, 2003
6,986
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Since you were such an impatient snot to my first post, you can find the answer in the
last link I gave you. It's detailed there.