Hi Dave,
I did a little web sleuthing and found this:
If that is what you are referring to, I see down in the write up:
"
Characteristics:
- Mount type: equatorial
- Type of stepper motor: bipolar
- Power supply requirements: 12V, 3A, 5.5mm 2.1mm plug
- The center pin of the power connector is positive
- Smooth acceleration and braking of the stepper motor."
Hope that helps.
--
SonnyE
(I suggest viewed in full screen)