Can I power the Mach3 USB interface 24V with a 48V power supply?
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The Mach3 USB interface card uses 5V (powered from the computer's USB) and a 24v to power the inputs, outputs and spindle control the mach3 usb interface can be found here: https://www.buildyourcnc.com/item/electronicsAndMotors-electronic-component-breakout-Mach3-USB-Board But the mach3 usb does not absolutely need the 24V supply. The 24v supply is only needed if you will be using limit switches (I1-4), VFD controlled automatically and for use with the outputs (O1-4) Additional Information: The 36v 8.8 amp power supply we typically recommend is for powering the stepper motor drivers.