Here's an example of my Compaq Presario 9232 for reference of the power connector. It is definitely different, but I haven't measured it to see which wires go to where.

In my case the connectors look rather normal and that is why I wondered if just switching the wires in connectors somehow could make it compatible.

wiretap

Here's this 1MB upgrade module for the S3 on the motherboard:
https://www.ebay.ca/itm/Compaq-213859-001-1MB … jEAAOSwHLtevt7F

This will help with performance of video chip. From 32bits to 64bit which S3 are designed for.

Cheers,

Baoran,

Please show picture of motherboard that you want to use compaq power supply on this?

Cheers,

pentiumspeed wrote on 2020-10-06, 16:00:

wiretap […]
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wiretap

Here's this 1MB upgrade module for the S3 on the motherboard:
https://www.ebay.ca/itm/Compaq-213859-001-1MB … jEAAOSwHLtevt7F

This will help with performance of video chip. From 32bits to 64bit which S3 are designed for.

Cheers,

Thanks. I already have that -- it just wasn't installed in the picture because the picture was taken about a month before I found one. What I am still looking for is the MPEG decoder module (Compaq P/N: 213924-001). I've found them already attached to motherboards, but I don't feel like buying a whole $30-40 motherboard just to get the MPEG decoder. 😜

Wiretap, Cool, one more thing, this one has main cache missing but is that not your goal?

pentiumspeed wrote on 2020-10-06, 16:01:

Baoran,

Please show picture of motherboard that you want to use compaq power supply on this?

Cheers,

Basically I am trying to figure out if it could be modded to be replacement for standard AT power supply. I don't have any specific motherboard I would use it with at the moment, but basically with standard AT motherboards.

Baoran wrote on 2020-10-06, 17:46:

Basically I am trying to figure out if it could be modded to be replacement for standard AT power supply. I don't have any specific motherboard I would use it with at the moment, but basically with standard AT motherboards.

Why don't you turn it on with an HDD and maybe some fans plugged to the molex connectors as a load and then measure voltages on the "P1" and "P2" connectors? You can compare those with the regular AT pinout in order to tell the difference.

TheMobRules wrote on 2020-10-06, 18:16:

Baoran wrote on 2020-10-06, 17:46:

Basically I am trying to figure out if it could be modded to be replacement for standard AT power supply. I don't have any specific motherboard I would use it with at the moment, but basically with standard AT motherboards.

Why don't you turn it on with an HDD and maybe some fans plugged to the molex connectors as a load and then measure voltages on the "P1" and "P2" connectors? You can compare those with the regular AT pinout in order to tell the difference.

So there cannot be anything else about a power supply than voltages that would make it incompatible?

pentiumspeed wrote on 2020-10-06, 16:56:

Wiretap, Cool, one more thing, this one has main cache missing but is that not your goal?

No need really. I just use it for Doom/Heretic/Duke3D and a few other things. It was my first family PC that I kept since 1996.