1.USB type B receptacle.

2.SD Card add on available.

3.LEDs indicate when heater outputs on.

4.Expandable to control other accessories.

5.Heated bed control with additional 11A fuse.

6.I2C and SPI pins left available for future expansion.

7.It has provisions for the cartesian robot and extruder.

8.All the Mosfets are hooked into PWM pins for versatility.

9.3 mosfets for heater / fan outputs and 3 thermistor circuits.

10.Fused at 5A for additional safety and component protection.

11.Servo style connectors are used to connect to the endstops, motors, and leds. These connectors are gold plated, rated for 3A, very compact, and globally available.