I have a self built LMS 3990 (Sieg X2) CNC that uses a newer laptop and a PMDX-411 SmartBOB USB port. I'm running Mach4 but am guessing it might also run with Mach3. I bought the PMDX at Cabin Fever here in PA several years ago. The guy who was there was really helpful. I'm sure if you...
