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Opus D/Doss AI Disc Controller

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Opus D/Doss AI disc controller top 

 Opus D/Doss AI disc controller (top)

Opus D/Doss AI disc controller bottom 

 Opus D/Doss AI disc controller (bottom)

The Opus D/Doss AI disc controller uses a WD2791. It is similar to the Opus WD2791 disc contoller .
 
I have no further information about this board.