The SilverDust D2-MG is QuickSilver Controls smallest servo controller. The SilverDust D2-MG is specifically designed to drive 100 poles, 1.8 step motors. To best utilize the capabilities of the D2-MG, select a motor that has been optimized for micro stepping. Its open frame design and motor winding breakout is ideal for OEMs driving a 3rd party stepper motors in either open loop (no encoder) or closed loop. The D2-MG comes standard with an SMI port, including 7 TTL IO, RS-232/RS-485, and system power input.