Please identify this sis496 486 board \ VOGONS

Please identify this sis496 486 board

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First post, by noshutdown

Posted on 2026-05-04, 14:34

noshutdown Offline

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The attachment image_editor_1777898968443.jpg is no longer available

As you can see, this sis496 board has sockets for 1mb cache and surprisingly 4 pci slots(i know sis496 officially supports up to only 3 pci slots but a few boards do have 4 of them, with unknown functionality). I looked up theretroweb.com and couldn't find one identical to it.
486 boards are usually in jumper heaven, and this one is no exception, so its not likely to get it working without finding the manual.
Also, does anyone know about the trademark with 3 triangles near the first isa slot?

Reply 1 of 3, by konc

Posted on 2026-05-04, 16:45

konc Offline

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noshutdown wrote on 2026-05-04, 14:34:

Also, does anyone know about the trademark with 3 triangles near the first isa slot?

The photo is not very good but it sure looks like the logo of Trigon, some examples are here (open the photos and you'll see the logo I'm talking about):
https://theretroweb.com/motherboards/s/mitac- … on-mb-486sqr-ru
https://theretroweb.com/motherboards/s/mitac-trigon-mba-0
https://theretroweb.com/motherboards/s/mitac- … -unknown-sis461

Fun fact, trigon with an o at the end (trigono) means triangle in Greek, how fitting!

Reply 2 of 3, by Mov AX, 0xDEAD

Posted on 2026-05-04, 17:30

Mov AX, 0xDEAD Offline

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As usual, Award BIOS ID tells what compatible bios installed on this board, but this doesn't mean what all compatible boards has same jumpers layout

Reply 3 of 3, by noshutdown

Posted on 2026-05-06, 01:12

noshutdown Offline

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konc wrote on 2026-05-04, 16:45:
The photo is not very good but it sure looks like the logo of Trigon, some examples are here (open the photos and you'll see th […]
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The photo is not very good but it sure looks like the logo of Trigon, some examples are here (open the photos and you'll see the logo I'm talking about):
https://theretroweb.com/motherboards/s/mitac- … on-mb-486sqr-ru
https://theretroweb.com/motherboards/s/mitac-trigon-mba-0
https://theretroweb.com/motherboards/s/mitac- … -unknown-sis461

Fun fact, trigon with an o at the end (trigono) means triangle in Greek, how fitting!

thanks for the info, man. looks its indeed a trigon, but still no manual to be found.
anyway, sis496 is not so attractive to me now, i definitely like umc8881 better and even ali1489 will do.

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