PMA controller modules, Lippert/ISA boards, interface cards, power and control boards, PLC modules
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Industrial Control PCB Board CXP 565-4 NEC-Based I/O Module Used Vintage industrial control PCB marked CXP 565-4, populated with NEC microcontroller and logic ICs plus Toshiba TLP504A optocouplers and Zettler relays; used as an I/O interface or relay output module in legacy automation systems, removed from working equipment and suitable as a spare card or…
IBM 16/4 Token Ring Network Adapter MCA FRU 74F9415 DB9 Used Vintage IBM 16/4 Token Ring Network Adapter for Micro Channel Architecture (MCA) systems, FRU 74F9415 with DB9 connector, ideal for restoring or maintaining classic IBM PS/2 and server hardware; card shows typical signs of age from storage and removal, but is a good candidate…
IBM – Realtime Interface Co-Processor Multiport2 – used, functional – SN B9156068278
Vintage IBM FRU 74F945 Circuit Board 1980s Retro Computer Mainboard Vintage IBM system board, Field Replaceable Unit (FRU) catalog number 74F945, likely from IBM industrial control or terminal equipment from early-to-mid 1980s era. This is a historic computing component featuring: (1) Original discrete component construction with multiple IC chips including Sony CXK59286-series RAM chips dated…
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