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* '''Board: PT NO Z70290, MC0023D, 94HB-R1706, Copyright 1985'''
* Sold in germany, with Amphenol connectors (and dummy edge-connectors which don't have any contacts, and which are covered by green solder-stop layer), front of mainboard has several vias for giving better contact to shielding plate).
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* '''Board: PT NO Z70290, MC...?, 94...?'''
* Looks ''almost'' like the above german board, but the "94HB-R1706" is different
* '''Size: ??? x ??? mm'''
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* '''Board: 2700-016P-3, MC0122D, Copyright 1990'''
* Same mainboard is used in 464+, but with additional components installed (extra RAM chips, FDC chips, Floppy connector, and with different [[LK Links]]).
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* '''Board: 2700-016P-3, MC0122B, Copyright 1990'''
* Another version, MC0122B, is shown in the [[Service Manuals]] (Plus series, page 5).
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* '''Board: 2700-016P-3, MC0122A, Copyright 1990'''
* Yet another version, MC0122A, is shown in the [[Service Manuals]] (Plus series, page 16).
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* '''Board: 27...?, MC...?, Copyright 1990'''
* Version without TV Modulator installed, and with IC101 replaced by 4 transistors.
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* '''Board: 2700-017P-3, MC0123A, Copyright 1990'''
* Shown in [[Service Manuals]] (Plus series, page 24 and page 32/france).
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* Photo of the above '''Board: MF0004B, ISS3''' (and maybe other ISSues, if any?)
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