For Color Computer/MC-10
Use a 26-3020 (6ft) for printers with a 4-pin DIN serial port. (4-pin DIN to 4-pin DIN) These printers are:
LP VII, LP VIII
FP 215
TP 10
TRP 100
CGP 220
DWP 210, 220, 230
DMP 100, 105, 106, 107, 110, 120, 130, 132, 133, 200, 400, 420, 430, 440

** This should work for the modem 1B also.