Note that there was no official external disk drive for the 6128Plus or even the 464Plus.
While the difference between a CPC664/CPC6128 and a 6128Plus was simply a changed pin-out which can easily be solved by a new plug on the disk drive's cable, the . The 464Plus was harder to equip with a disk drive: Although the pin-out of the expansion port was left unchanged, the DDI-1 cannot be operated on the 464Plus without modifications.
== Technically Speaking ==