Asus P55T2P4 Baby AT into ATX case - do I need a special power switch? \ VOGONS

Asus P55T2P4 Baby AT into ATX case - do I need a special power switch?

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First post, by eliot_new

Posted on Yesterday, 10:55

eliot_new Offline

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Joined: 2025-07-29, 20:49

Hello everybody

I have bought an Asus P55T2P4 for nostalgia reasons.
It has the Baby AT format.

As I have only ATX cases I ordered at Aliexpress a cheap ATX 2 AT power cable adapter.
But recently I have discovered that I will ned an extra power button, as the ATX power cable from the case (green and white colored wires) will not work?

https://forum.vcfed.org/index.php?threads/bui … x-case.1069944/
"Now, there is one thing that I still don't have done and that's a power switch. A power switch is the hard part"

Is there an how to article describing the process of this extra power switch?

DOS:K6-3/400,64MB,P5A,Rendition v2200 AGP,Trio64 PCI,3dfx V1,AWE64,ESS1938,PicoGUS 2.0,32GB
w98SE:P3/450,768MB,QDI440BX,V3AGP,AWE64,GUSPico,80GB
wXP:P3/1G,512MB,CUSL2-C,MSIFX5600,Audigy1,80GB

Reply 1 of 4, by Locutus

Posted on Yesterday, 12:01

Locutus Offline

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You just need to replace monostable power switch mounted in your case with bistable and connect it to ATX 2 AT power cable adapter.

Reply 2 of 4, by maxtherabbit

Posted on Yesterday, 15:14

maxtherabbit Offline

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Locutus wrote on Yesterday, 12:01:

You just need to replace monostable power switch mounted in your case with bistable and connect it to ATX 2 AT power cable adapter.

or translated into english, replace momentary switch with latching switch

Reply 3 of 4, by eliot_new

Posted on Yesterday, 20:59

eliot_new Offline

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Rank: Newbie
Posts: 64
Joined: 2025-07-29, 20:49

Ok thank you, I have found a latching switch on Amazon.de

DOS:K6-3/400,64MB,P5A,Rendition v2200 AGP,Trio64 PCI,3dfx V1,AWE64,ESS1938,PicoGUS 2.0,32GB
w98SE:P3/450,768MB,QDI440BX,V3AGP,AWE64,GUSPico,80GB
wXP:P3/1G,512MB,CUSL2-C,MSIFX5600,Audigy1,80GB

Reply 4 of 4, by fosterwj03

Posted on Yesterday, 23:23

fosterwj03 Offline

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You could also short the power switch cables on the adapter and use the ATX power supply's power switch (assuming your PSU has one) to start the system.

I did that in a pinch until I had proper toggle switches.

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