Processor Technology 3P+SI/O S-100 Board

Altair Bread Board S-100

Macrotech Intl MSR-II S-100 Board

S-100 backplane motherboard bare PCB 9 slot (for Altair/IMSAI)

IBM PS/2 Model 90 XP 486 CPU Processor Complex Board 33MHz 1989 Vintage PC Compu

Lot of 6 S-100 Bus Slot Card Edge Connectors NOS S100ST

Bob Mullen TB-2 Vintage 1978 Computer S-100 Extender Board Card (very nice)

Vintage S-100 Computer Board Lot RAM Interface Display Industrial Control System