Stepper Motor Controllers and Drives
Controller/Driver controls 4 stepping motors at once.
Press Release Summary:

Original Press Release:
MCB-4B 4 Axis Step Motor Controller/Driver
Advanced Control Systems Corporation is pleased to introduce the MCB-4B, a compact unit that can control up to 4 stepping motors with mini-step capability.
The MCB-4B is an integrated stepping motor controller/driver board for simultaneous control of up to 4 stepping motors. Each axis is addressable, and several boards can be controlled by a single computer communication port.
Any stepping motor with 4, 6 or 8 leads and a phase current up to 3Amp can be controlled.