I'm not sure what your original board had but if you use it just make sure you set up the ports and pins correctly in Mach 3 and it should work.
If you do go with the new board you will have the ability to have dual Y-axis if your hardware supports that and still have an open input for a rotary A axis.
Remember this is a Parallel port board and the USB jack is used for a 5v power supply from your computer. This board should have inputs for limits and touch plate use. Again make sure you set up ports and pins in Mach3 correctly.
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