Robot Arm: The SSC-32 Servo Controller

       The servos on the robot arm are controlled by a controller board called a SSC-32. 

       Here's a diagram from the manual detailing each of its components. 

       As you can see, those pins along the bottom are the connection points for a servo motor. One pin is ground, one pin delivers power, and the remaining pin delivers the pulse that moves the servo. The area of the card that says "Baud" is where the speed that data is passed is selected using 2 jumpers. As you can see in the photo, both jumpers are in, which means that the card will operate at the maximum speed of 115.2 Kilo Bytes per second.