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my programming cable is 6ES5734-2BD20,tell me diffence between 6ES5734-1BD20 and 6ES5734-2BD20

Hi

6ES5734-1BD20 SIMATIC S5 734-1 CABLE FROM PLC, 15-PIN TO PC, 25-PIN 3.2M

6ES5734-2BD20 Cable 6ES5 734-2...0 for the connection of the PG 710 to SIMATIC S5-90U to -115U PLCs. Product Information on the PG 710 PLC Interface #17*

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