Features:With powerful 32 Bit processor .High speed SDcard and support for a secondSD external card if required.Dualextruders on the main board, up to 5 more extruders on the expansion board.Expandableup to 7 extruders with Firmware support for mixing nozzles and remapping axesto use highpower external driver.HighPower rating: Each step driver is capable of 2.8A motor current, currently limited in software to 2.4A. The bed heater channel is specifically designed for high current 18ASpecifications:Item Type: MotherboardModel Number: Duet 3The Large Main Board Size :Approx 14cm5.51' long and 13.4cm5.28' WideWeight:330g0.66lbMaterial:MetalNote:Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understandPlease allow 0-1cm error due to the manual measurment.Package includes:1X Duet 3 6HC Board1X Cable