Mach3 USB driver file can be found HERE
Mach3 profile for the USB controller can be found HERE
Step 1: Installing Mach3: You will need to purchase a Mach3 license and download the software. If you already have a licensed copy of Mach3, skip this step.
Step 2: Download the USB Motion Driver RnRMotion.dll from the link above and copy and paste the file into your Mach3 Plugins folder Example: "C:/Users/ProgramFiles/Mach3/Plugins".
Step 3: Make sure you board is connected to the PC via USB cable. It should automatically recognize the USB device.
Step 4: Open Mach3 and you should be prompted to select a driver. Select the "RnRMotionController" and check "Don't ask me again". This will allow your board to communicate with Mach3.
Step 5: Download the XML Mach3 Config File above by right clicking on the link and selecting "save as". Save the Mach3Mill.xml file in your Mach3 root folder.