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Q: AT to ATX PS ( Answered 4 out of 5 stars,   0 Comments )
Subject: AT to ATX PS
Category: Computers > Hardware
Asked by: ssrteddy-ga
List Price: $5.00
Posted: 16 Mar 2003 08:03 PST
Expires: 15 Apr 2003 09:03 PDT
Question ID: 176952
I have bought a great 400W PS but it is the old AT type with the P8P9
connectors.How can I convert this to an ATX 20 pin connector?
I have searched the web and there is no such adapter advertised, only
an ATX to AT adapter.
Subject: Re: AT to ATX PS
Answered By: feilong-ga on 16 Mar 2003 09:29 PST
Rated:4 out of 5 stars
Hello ssrteddy,

"I have searched the web and there is no such adapter advertised, only
an ATX to AT adapter."

I tried and a quick search easily yielded the soolution to your
problem. You can find this particular adapter at
Simply press the "Shift" key before clicking on a link so it will open
a new window or right-click on the link and choose "Open in New
Window" for your convenience.
AT to ATX Power Converter Cable

Here is the enlarged view of the adapter:

AT to ATX Power Converter Cable

You can find other cable products of this company here:

Trianglecables - Cable Products

You can find more related information using the link below.

Search strategy:

"at to atx"

I hope this helps you. Should you have any comments/questions, please
feel free to post your clarification before rating this and I'll
attend to you as soon as possible. Thanks for asking.


Request for Answer Clarification by ssrteddy-ga on 16 Mar 2003 16:40 PST
Hi Feilong,

Thanks for your attempt but if you look carefully at the picture of
this adapter
on you can see that they are offering an ATX to AT
adapter.They have advertised it incorrectly....not your fault.


Clarification of Answer by feilong-ga on 17 Mar 2003 11:42 PST
Hi Ssrteddy

I found two sites from the search string I used for your question. The
first one is located in India. I don't know were you are located and
it may be far from your place, but if you really want to get the
result you desire, it's worth it. Below  is the link with the
description of the product.

Cyber Shop - Welcome to cyber shopping
AT to ATX converter
"This is a connector at one end you connect you AT psu and the other
end you connect to the ATX mother board. But the mother board will
work like a AT mother board not like the ATX board, meaning the mother
board will power on as soon as you power the PSU."
This converter is for $10 with shipping

Contact info:

Payment terms:

I found another company that is committed to give its customers the
solutions they need.

Advanced Cable Systems (ACS)
Internal Power Cables
ACS913-06     ATXF-ATM     ATX to AT Motherboard Adaptor - 6"
ACS914-06     ATF-ATXM     AT to ATX Motherboard Adaptor - 6"

In case that didn't solve your problem, they also make custom cables.

Custom Cables
"We make custom computer cables for almost every application. From
SCSI to ethernet to V.35 cabling. If it has something to do with the
computer, network, or audio/video industry, then we can build. Our
production time is fast, next day in most cases. And we have literally
thousands of configurations on hand. Fax us you special need, or try
our special order form."

Contact info:
Advanced Cable Systems (ACS)
1807-132nd Ave N.E., Suite 4
Bellevue, WA 98005
Hours: 8:00 AM-5:00 PM - Monday-Friday
Phone: (425)556-1721 
Fax: (425)556-1723.

With regards to pursuing your objective, here are some references I
found along my search that you may find interesting.
Re: AT to ATX (is it possible?)

I was wondering if I could use an AT power supply in an ATX
motherboard. I don't care about any of the additional features
provided by ATX power supplies, and just wish to use the numerous AT
power supplies I own. I thank you for any help that you can give me.

"I think it is difficult to us AT psu in ATX motherboard. The
different between at and atx is 3.3v ,Vsb and Ps/on. You must check
your mother board use 3.3v or not ? If it didn't use 3.3v (good
luck)then you can connect Vsb to 5v and and connect ps/on signal to
ground and wiring the 20 pin connector according to the site"


Dailey International Publishers -
"Building the New PCs - Catching up with Technology"

Building a PC - An Illustrated Step by Step Guide

I hope this solves your problem.


Request for Answer Clarification by ssrteddy-ga on 17 Mar 2003 17:40 PST
I have emailed Advanced about their AT to ATX adapter.You
have been very helpfull.

Clarification of Answer by feilong-ga on 17 Mar 2003 20:05 PST
Thanks Ssrteddy. I hope you become a frequent user of this service.
ssrteddy-ga rated this answer:4 out of 5 stars

There are no comments at this time.

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