This is a 3 axis electronics system with a 62 oz-in stepping motor for smaller CNC and 3D printer machines (3) NEMA 17 62 oz-in stepping motors (3) Drivers (2.5Amp 8.2-45 Volts, 1-1/32 microstepping) (1) 24v 8.3a Power Supply (1) Interface Board either USB or Parallel (select the appropriate interface board in the price options. Choose From 3 Interface Boards Parallel Board: Works with Mach3, Mach4, or Linux-CNC. Parallel Port and Parallel Cable Required on PC running a 32 bit OS. Software can be purchased from BuildYourCNC. Mach3 USB Board: Works with Mach3 ONLY. Connects through standard USB port. Mach3 can be purchased from BuildYourCNC. If you are using the pokeys57CNC Controller, please view the videos on the product page for the Pokeys57CNC board below: https://buildyourcnc.com/products/electronicsandmotors-electronic-component-breakout-mach4-mach3-usb-ethernet-board?_pos=1&_sid=fc7b6afe6&_ss=r