XHC Mach4 Motion CNC Controller board This is the latest generation Mach4 cnc motion control card, which is the fourth generation calling MK3-M4. It could work under Mach4 software. The maximum step-pulse frequency is 2000 KHz. Now MK3-M4 is stronger, more stable and better performance than other version 1.Dual-Processors, ARM+FPGA, More processing power2.Support all versions of Mach 4.3.Work under Windows 32-bit … Continue reading mach4 cnc controller