1. runs GRBL firmware2.Support SD card extender3.Available to adjust the power, movement speed and engraving speed4.uper grayscale carving function5.Support Machine Structure is CNC, Laser-engraving machine, writing robot6.Recommended Software is GRBL Controller, Benbox, mDrawSpecification:Product name: main control boardColour: BlackProduct material: ABS + metalInput voltage: DC12VMicroprocessor:MEGA328PMotherboard size: 90 x 70mmProduct weight: about 63gPackage Contents:1 x Control Board1 x USB Data CableOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.