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IBM PS/2 Model 55SX

Motherboard RH-0238
ManufacturerIBM
ModelPS/2 Model 55SX
Year1987
ConditionRestored
SourceKnock Knock Old Geek, Discord
Acquired2026-05016
Installed inRH-0237
Referencehttps://theretroweb.com/motherboards/s/ibm-ps-2-model-55sx-and-55ls-8555-early

Specs

ChipsetIBM 90X8134 IBM 23F9177 IBM 27F4619 IBM 23F8566 IBM 27F4620 IBM 27F465
CPU family386-class
Form factorproprietary
RAM slots2× 72-pin SIMM
Slots3× MCA
BIOSIBM C1.10 (1988)
Onboard videoIBM VGA
PortsFloppy, Serial, Parallel, PS/2 keyboard, PS/2 mouse