RAMPS 1.4 Reprap Board Red Control Reprap Board for Mega 2560

The fifth stepper motor output port can be customized as a Z-axis motor or a second extruder.
Can be extended to control other accessories.
Three field effect transistors, three heater / fan output ports, three thermistor circuits.
Heated bed control, extra 11A fuse.
Pololu board foot socket, can be easily replaced or removed.