Personal System/2 Model 25 Technical Reference

Scope and location

Exact named pinout variant only; not capability or compatibility approval.

Section 1 Parallel Port, 'Connector', Figure 1-115 'Parallel Port Connector'; Section 1 Serial Port, 'Connector', Figure 1-109 'Serial Port Connector'; Section 1 System Board, Figure 1-120 'Keyboard Connector and Pointing Device' (J1, J2); Section 4 Keyboard, Figure 4-15 'Keyboard Cable Connectors' (DIN connector pins)

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Inspected

2026-10-21

Access

public pdf text

Recorded AI-assisted source inspection; not independent human approval or hardware testing.

Source scope and unresolved evidence are preserved in the engineering variant.

Source inspection is separate from independent technical approval, rights clearance and hardware testing.