V.35 Communication Cable WN34

The DataPro 1335 series cable is a V.35 Communications cable, with a 34-pin male Winchester type connector at each end.

These cables are typically used in a high-speed synchronous serial application, such as with a CSU/DSU WAN networking unit. If any of that means anything to you, then you probably know everything you need to know already, and have decided whether this is the cable for you. If not, perhaps you should consider something more modern.