[[File:GX4000 PCB Top.jpg|200px|left]]
* '''Board: 2700-017P-4, MC0123C, Copyright 1990'''
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== DDI-1 ==
[[Image:DDI-1_ISS3_MF003B.jpg|200px|left]]
* '''Board: MF0004B, ISS3'''
* 20pin FDC Data Separator
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