IBM PS/2 8530 System Board 61X8823 61X8825 Personal Computer Motherboard

IBM PS/2 8530 System Board 61X8823 61X8825 Personal Computer Motherboard

This is the IBM PS/2 Model 30 (8530) system board, identified by part numbers 61X8823 and 61X8825. The system board is the main logic board for the IBM PS/2 Model 30 desktop computer, integrating the CPU, memory, and all primary I/O onto a single proprietary PCB. It carries the full complement of onboard chips, ISA expansion connectors, and the integrated I/O bracket with multiple port interfaces.

Specifications & What's Included

• Manufacturer: IBM
• Compatible System: IBM PS/2 Model 30 (Type 8530)
• Primary Part Number: 61X8825
• Secondary Part Number: 61X8823
• Form Factor: Proprietary IBM PS/2 system board
• Bus Architecture: ISA — multiple on-board ISA expansion headers visible
• I/O Ports (on integrated bracket): 2x PS/2 mini-DIN (keyboard/mouse), 1x DB-25 parallel port, 2x DB-9 serial ports
• PCB populated with multiple DIP, PLCC, and QFP ICs including main processor support logic and glue chips
• Memory chip array present along board edge (near J13 connector)
• Board only — no cables or accessories included

Applications

The IBM PS/2 Model 30 (8530) was introduced in 1987 as part of IBM's Personal System/2 line, which succeeded the original IBM PC and PC/AT product families. The Model 30 was the entry-level member of the PS/2 range, using an 8086 processor and the ISA bus rather than IBM's proprietary Micro Channel Architecture (MCA) found in higher-end PS/2 models. These machines were widely deployed in business and educational settings throughout the late 1980s and into the early 1990s. Today, this system board is sought primarily by collectors, restorers, and technicians maintaining or repairing surviving IBM PS/2 Model 30 systems. Because the Model 30 used a proprietary form factor, original IBM system boards are the only direct replacement option for systems that require board-level repair.