Uploaded May 2021 | Updated September 2026, 2 weeks ago

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The second part in our new series on PCI Socket 3 motherboards.

Ultimate Hardware website:

win3x.org/uh19

Forum post with SOYO SY-027B photo:

forum.planet3dnow.de/index.php?threads/zeigt-her-eure-mainboards.313776/page-4#post-3752306

SOYO SY-027B2/B5 jumpers:

web.archive.org/web/20141017221239/http://artofhacking.com/th99/m/S-T/31662.htm

Socket 3 Pinout diagram:

eprm.ardent-tool.com/eprmx/12203.htm

SGS Thompson Datasheet:

datasheets.chipdb.org/SGS%20Thomson/x86/486/4193.PDF

Pine Tech PT-413a Board:

win3x.org/uh19/motherboard/show/7962

Japanese website with TK-8880F-4N-D09A board:

funkygoods.com/mb/mg_pci486/mg_pci486.htm

List of LM Series Integrated Circuits:

en.wikipedia.org/wiki/List_of_LM-series_integrated_circuits#Differential_comparators