ARDUINO UNO R3 With 4pcs A4988 Driver With CNC Shield V3

THIS EXPANSION BOARD AS A DRIVER EXPANSION BOARD, CAN BE USED FOR ENGRAVING MACHINES. IT IS A TOTAL OF FOUR SLOTS, CAN DRIVE FOUR A4988 STEPPER MOTOR. EACH ROAD STEPPER MOTORS ONLY NEED TWO IO PORTS. IN OTHER WORDS, SIX IO PORTS CAN BE WELL MANAGED THREE STEPPER MOTORS. VERY CONVENIENT TO USE. Brand : Raspberry Form Factor : ATX Processor Manufacturer : Intel Maximum Memory Supported : 1 GB Processor Socket Type : LGA1150 Socket Motherboard Chipset : Intel G41 Number of Processors Supported : 1 Memory Technology : DDR Type : Desktop Motherboards Number of Memory Slots : 1 Model Number : A4988