Quote Originally Posted by k_jupiter View Post
I guess as an engineer, I have to point this out to you. They don't put extra parts on a camera. It costs them money. So if there is a spot for a winding knob, you need to have it.

And that's the nicest way of saying it.

I am glad you got this all worked out. The 645 is a great camera.

tim in san jose
The OP has been putting together his kit piece by piece - he may have bought the body with the intention of acquiring and using the power winder instead of the manual crank.

Many of the original Mamiya 645 Pro cameras were definitely sold with a power winder and without the manual crank. It may be the same for the Mamiya 645 Super.