Can anyone tell me how it CAN be done (I have less use for the "how it can't be done" stuff...)?

i.e. Can anyone explain it specifically with names of the connectors used and what they plugged into?

I'd like to hear it from somebody who has connected an SGDA drive to a computer. Opinions are usually fine and I appreciate people trying to help but.... on this topic.... I need facts.

This is such a frustrating problem. I don't even want to use servos. I just can't find any stepper motors that fit in my actuator case. Nema 23 /24 stepper have a shaft that is too short to reach the coupling and Nema 34 frames are too tall for the casing.