Features: 100% brand new and high quality ARM cortex- M0+pprocessor running at 48MHz 5V different step. Dir and enable outputs for an external stepper driver,can be used in different or single ended mode. The medium-current (2A maximum recommended) outputs at vin voltage with PWM capacity and built-in flyback diodes. One 5V-level output with PWM capacity(3mA maximum) Three digital inputs with permanent 27K pullup- resistors, over-voltage protection. Package Includes: 1 Set x Duet3 Expansion 1XD Board Specifications: Item:Duet3 Expansion 1XD Board Size: approx 50mm/1.97in Material: Metal note: Due to the differences of camera equipment, light intensity and display screens, the color of the item may be slightly different from that shown in the pictures. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Thank you.