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Housed a black version of the Spectrum +2 case mouldings.
The Spectrum +2a motherboard (AMSTRAD part number Z70830) was designed such that it could be assembled without the floppy disk controller or associated logic and a +2 style 'datacorder' connected.
The power supply of the ZX Spectrum +2A used the same pinout as the +3. However, the power supply purchased with the +2A had 'Sinclair +2' written on the case.