I'm providing a 3.5" disk drive with a DDI connection cable and a 5V power supply, as well as a 3.5" floppy disk with CPM 2.2. Black cover fir Drive. How to use the disk drive with the CPC 464. 1) If you have the DDI-1 and FD-1, you can connect it to the B slot of the DDI-1 and use it as drive B by selecting drive B on the appropriate switch. You can select both sides (a and b) using the appropriate switch. 2) If you only have the DDI-1 and don't have the FD-1, you'll need to make a small modification to your DDI-1 to power it directly from your CPC. 3) If you have a DDI-3/4/5/6, you can plug it into the appropriate slot of DDI-X