Changes
/* PCBs */
Z70101 P.C.B. CPC464 version 1 keyboard with soldered wires
Z70102 P.C.B. CPC464 version 1 keyboard with 20 pin connector (only 19 pins used)
Z70102 P.C.B. CPC464 cassette sub-board (note that this This pcb shares share part number with the keyboard assembly !)
Z70200 P.C.B. CPC464 version 2
Z70205 P.C.B. CPC664
