UC300 Mach3 USB 4-Axis CNC Controller Board
Part number: UC3003D Printer & CNC Parts
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Prices updated: 12 Oct 2026
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About this product
A USB motion control board for Mach3 that handles up to four axes of a CNC machine. It connects to a Windows PC over USB without a separate driver, and it is intended to drive external stepper or servo drivers.
Specifications
- Software compatibility
- Mach3 (all versions)
- Axes
- 4-axis
- Interface
- USB, plug and play, no driver required
- Operating system
- Windows (Win8 and Win10 supported)
- USB isolation
- Magnetic isolation
Frequently asked questions
Does it need a driver installed on Windows?
According to the listing, no. It works as plug and play on Windows and supports hot plugging.
How do I connect the motors?
Connect the board's step and direction outputs to external stepper drivers such as the DM542, then connect each driver to its motor. Check the pin labels on your board and drivers first, and power the drivers from a separate supply.
