Each controller takes 4 ports there are 20 ports on the ez-b so 5.

thank you so much One More Question

How would i connect a higher amp 12v dc motor to the EZ-B?

The motor would get it's power from the motor controller. The motor controller gets 5V signal from the EZ-B and motor power from an alternate source. So just make sure the motor controller can handle that much power and hook it up to a 12V source.

Thank YOU!!!

What is the torque on a standard servo?

If you can have more than one H-Bridge motor controller, how do you control them if only one Movement Panel Control is allowed?

I not sure cause i dont have ez-b yet but i think you can have more than one