The Black Edition A4988 stepper motor driver carrier is available with approximately 20% better performance; except for thermal characteristics, the Black Edition and this (green) board are interchangeable. We also sell a larger version of the A4988 carrier that has reverse power protection on the main power input and built-in 5 V and 3.3 V voltage regulators that eliminate the need for separate logic and motor supplies. Our DRV8825 carrier offers approximately 50% better performance over a wider voltage range and with a few additional features, while our DRV8834 carrier works with motor supply voltages as low as 2.5 V; either of these boards can be used as a drop-in replacement for this driver in many applications