This is the more advanced version of USBCNC and intended for the more serious hobbyist. It has all the advantages of the CPU 3 and some extras. The extra features are, 5 axis control, 75KHZ, hand wheel input.
The 75Khz is one of the nicest features, when using stepperdrivers in microstep mode, one reaches the 25Khz limit quite fast, with this new 75KHZ controller...
We prefer the ribbon cables and connectors, which is standard on CPU v4, since we have made all of our components plug and play with this system. When interfacing other equipment for which there is not a standard pcb, it can be nice to have screw terminals for making easy connections. Thats why we offer this CPU v4 connection set...