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Lo-tech TRS-80 IDE Adapter rev. 2 (PCB Only) - TexElec
This is also known by some as the “El-Cheapo” IDE interface. In its current state, it can be used with a TRS-80 Model III, 4, 4P or 4D. The included cable will connect to your machine and all you will need is a DOM IDE disk module such as the PQI Industrial 128mb DOM or …