Contained in the HELP SCREENS for both Radio Programmer and Radio Personality Manager, under PROGRAMMING THE RADIO are the hookup diagrams for radio to computer, and more importantly the diagrams for all programming cables of the radios supported by the software platforms. Basically, you can build your own cables. And in the case of the Orion/J725m/M7100 radios, you can rewire the older TQ-3377 Orion cable into the newer TQ-3409 "Shop" cable, which does not require the TQ-3370 Programming interface box.
I hope this is helpful...