*'''Amstrad CPC464''': This computer lacks the disc controller hardware and the software to use a disc drive. To use discs on an Amstrad CPC464 the most compatible interface is the DDI-1 (this includes AMSDOS ROM). Normally this interface came with one FD-1 3" disc drive.
*'''Amstrad 464+''': This computer lacks the disc controller hardware and the software to use a disc drive. The PCB of the 464+ is the same as the 6128+ but with the components removed. So it is possible to add all the extra components required to get a disc interface and Amstrad Action published an article about how to do this. However finding all the components is not so easy now. A DDI-1 can be fitted to the 464+, but you will probably need a conversion cable; to convert the connector on the expansion to the old edge connector on the DDI-1, but also the DDI-1 interface needs modifying to be compatible.
*'''Amstrad CPC664, CPC6128, 6128+''': These computers all come with disc interface and AMSDOS ROM integrated into the computer. In addition they all come with an internal 3" disc drive.
Disks are one of the easiest way to use programs on the Amstrad.