IBM 15F8289 MCA Memory Expansion Card Module FRU

IBM 15F8289 MCA Memory Expansion Card Module FRU

This is a field-replacement-unit (FRU) MCA memory expansion card designed for IBM PS/2 and compatible systems that use Micro Channel Architecture. MCA memory cards were essential upgrades for mid-range business systems in the 1980s and early 1990s, allowing users to increase available RAM for improved performance and system stability. The 15F8289 is a recognized IBM FRU component, identified by its part number for service and replacement environments.

Specifications & What's Included

• Brand: IBM
• Model / Part Number: 15F8289
• Type: MCA Memory Expansion Card
• Interface: Micro Channel Architecture (MCA) bus connector
• Form Factor: Card/Module (plug-in expansion card)
• Compatibility: IBM PS/2 systems and MCA-equipped compatible computers
• Card only — no cables, documentation, or mounting hardware included

Applications

MCA memory cards like the 15F8289 were standard upgrades in IBM PS/2 computer systems, which dominated corporate and office environments throughout the late 1980s and into the 1990s. These cards allowed system administrators and users to expand available RAM, supporting larger applications, multitasking, and improved overall performance. Today, the 15F8289 remains useful for PS/2 system restoration projects, legacy equipment preservation, and historical computing collections. The MCA bus architecture is no longer in production, making functional cards increasingly scarce.