Hi,
Wow, very rare and look like reliable motherboard.
Indeed the manual seems pretty rare too .. In worst case try this : https://www.mostron.de/kontakt/?lang=en
Keep us posted 😉

theretroweb hasn't known it yet and MOStron as well

That's a beautifully obscure design, particularly with the offset PCI slot.

That said, German design meant something back then, it's probably rock-solid, and Aladdin IV+ chipset is superb.

It's mentioned in a 2004 Archive.org snapshot of Mostron's site, but as far as I can see, it only has a datasheet available. Great for specs (which are all apparent from design and chipset anyway), nothing about jumpers...
https://web.archive.org/web/20050103151932/ht … rd/MBO_P55A.PDF

Afraid I haven't been able to find more than that.

Hi,

I allready wrote them, but no response. I ask in company where i worked, but they told me, they came from Germany with no manual, pre-installed.
It is industrial motherboard made for German company. Save them from ewaste with Pentium 233MMX and K6-233 with 32MB or 64MB SD-RAM. Of course that was ELSA branded graphic card with S3 chipset.
Offset PCI slot was for special controller card, but i didn´t save them.
Great is for BIOS and replaceable DALLAS.

High time to replace those bulged caps.

majestyk wrote on 2022-09-15, 07:10:

High time to replace those bulged caps.

That board is faulty, have 8 working of 10. 😀

dionb wrote on 2022-09-13, 23:15:

That's a beautifully obscure design, particularly with the offset PCI slot.

indeed that is one weird motherboard 😀

dionb wrote on 2022-09-13, 23:15:

German design

Made in Taiwan 😜

BRBlosh wrote on 2022-09-15, 06:57:

Offset PCI slot was for special controller card, but i didn´t save them.

too bad, those could have been worth more than vintage pc gear depending on what it was doing (cnc?)

rasz_pl wrote on 2022-09-15, 10:27:

indeed that is one weird motherboard :) […]
Show full quote

dionb wrote on 2022-09-13, 23:15:

That's a beautifully obscure design, particularly with the offset PCI slot.

indeed that is one weird motherboard 😀

dionb wrote on 2022-09-13, 23:15:

German design

Made in Taiwan 😜

BRBlosh wrote on 2022-09-15, 06:57:

Offset PCI slot was for special controller card, but i didn´t save them.

too bad, those could have been worth more than vintage pc gear depending on what it was doing (cnc?)

Ah yes, like the super rare Bull-Micral 45 motherboard : very gorgeous and designed in France but made in Taiwan too 😜

BRBlosh wrote on 2022-09-15, 09:55:

majestyk wrote on 2022-09-15, 07:10:

High time to replace those bulged caps.

That board is faulty, have 8 working of 10. 😀

Then expect those 8 to fail as well in the years to come. (assuming the same caps were used)

They was using for testing circuit boards or fuel pumps or flow meters.

In others boards, caps are in good condition, even DALLAS batteries are good.

BRBlosh wrote on 2022-09-19, 04:43:

They was using for testing circuit boards or fuel pumps or flow meters.

In others boards, caps are in good condition, even DALLAS batteries are good.

Thats not how things work. Both batteries and capacitors are perishables, especially 30 year old ones are on their last legs.
Everyone loves car analogies, so thing of those components as 20 year old tires. Thread might still be there, but they are dry rotted and will pop any day now.