Oki 4M - Manual (Page 111)

B - 1
Appendix B PARALLEL INTERFACE
(1) Connector
• Printer side : 36-pin receptacle
Type: 57RE-40360-730B-D29A (Daiichi Denshi) or equivalent
• Cable side : 36-pin plug
Type: 57-30360 (Daiichi Denshi) or equivalent
(2) Cable
• Cable length : 6 feet (1.8 m) max.
(A Shielded cable composed of twisted pair wires is recommended for noise prevention.)