The FlashCut CNC Digital & Analog I/O Expansion Board provides the FlashCut CNC USB Signal Generator and Pro-Series Microstepping and Servo Controllers with an additional 24 digital inputs and 24 digital outputs (for a total of 32 inputs and 32 outputs), one analog input for Torch Height Control, two 0-10V analog signals for spindle speed control or other devices that use precision analog control, an encoder input for spindle speed monitoring and threading applications. It easily fits into existing USB Signal Generator using the included hardware.