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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…
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IBM – Realtime Interface Co-Processor Multiport2 – used, functional – SN B9156068278
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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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Kuhnke 657.428.21 EPROM-RAM Memory Module 128K x 16 New Old Stock Kuhnke EPROM-RAM memory module, part number 657.428.21 (catalog label 27764), with 128K x 16-bit EPROM and 128K x 16-bit RAM, battery-buffered by accumulator, for Kuhnke PLC and automation systems. New old stock module in original Kuhnke box marked “EPROM/RAM-Speicher mod. 128K x 16”, only…
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Kuhnke KDT 640 Convac Control Panel HMI 24V DC Touchscreen Keypad Germany Kuhnke KDT 640 Convac industrial HMI touchscreen and keypad operator panel. 24V DC, IP20, Part No. 640.001.99. Made in Germany. Used for machine- and process-automation, includes numeric pad and serial/comm ports. Used, good condition, see all images for cosmetic details.