MFDC cartridge is a floppy disk drive controller for MSX computers. The controller allows two PC 3.5-inch floppy disk drives to be connected simultaneously, allowing for convenient copying between disks.
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The MFDC controller is designed to use standard PC floppy drives, so that you can reuse old floppy drives that you already have, whether in an old computer or one that is lying around in a drawer at home.
The connection is simple, just use the same data cable that was connected to the PC, this is as far as the data cable is concerned. As shown in the photo, the connector has a slot, this slot must match the protrusion of the connector of the data cable itself, thus eliminating the possibility of connecting the cable incorrectly. Additionally, “Pin 1” is also indicated on the label. Pin 1 must match the color marking that all flat ribbon cables have.