Dison AMC167 Rev B 36-Pin Serial Card ISA CCA AMC168 Dison Technology

Dison AMC167 Rev B 36-Pin Serial Card ISA CCA AMC168 Dison Technology

The Dison AMC167 Rev B is an ISA bus serial expansion card produced by Dison Technology, copyright 1995. The board carries the PWB designation AMC167 REV B and the assembly designation CCA AMC168. It provides serial I/O expansion via a 36-pin D-sub style connector on the card bracket, interfacing to a host system through the ISA edge connector. Cards of this type were used to add or expand serial communication ports in ISA-bus PCs — common in industrial control, data acquisition, and instrumentation environments where multiple RS-232 serial ports were required.

Specifications & What's Included

• Manufacturer: Dison Technology
• Model / PWB: AMC167 Rev B
• Assembly: CCA AMC168
• Copyright: 1995
• Bus Interface: ISA
• External Connector: 36-pin D-sub style on card bracket
• PCB: green, full-length ISA card with multiple DIP ICs, DIP switch arrays, and resistor networks
• Notable component: BI resistor network 898-3-R22K (date code 9613)
• Card only — no cables, adapters, or software included

Applications

ISA serial expansion cards like the AMC167 were standard hardware in the 1990s for adding multiple RS-232 serial ports to desktop PCs and industrial workstations that used the ISA (Industry Standard Architecture) bus. They were widely deployed in factory automation, CNC machine control, point-of-sale systems, and scientific instrumentation setups where several serial devices needed to connect simultaneously to a single host PC. The ISA bus was the dominant PC expansion standard from the mid-1980s through the mid-1990s, before PCI became universal. Today these cards remain relevant for maintaining legacy ISA-slot industrial and embedded systems that rely on dedicated serial port expansion hardware.