Specification:Connection: USB (USB-CH340)Software: GRBL controller, Universal GcodeSenderMaster chip: 328P ( nano) driver: A4988Color: Blackmaterial: plasticSpindle drive chip: MOSFET, the highest 60V (recommendation within 48V, current :within 10A )Support : 12V, maximum current of 2A or less is recommended within 1.5A and additional heat. (Any 42, 57)Laser-engraving: SupportEngraving machine suitable for this control board:3018pro-METAL Engraving Machine 3018 pro laser-Machine 1610 DIY laser-Machine 3018 Pro Max laser-Engraver 2418 DIY Engraving MachinePackage Contents:1x GRBL 1.1 J 2 axis control board1x USB cableOnly the above package content, other are not included.Note: Light reflection 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.