A friend has given me a PC which I would like to use as a backup to the PC that runs my mill, but new PC doesn't havea serial printer port only USB. I have looked through previous posts on USB connection but last was 2007.
Can you advise on current arrangement for connection from PC to machine via USB
Thanks

Mike

If you are wanting to run your machine via a USB port instead of the parallel port your best option is the SmoothSteppr: http://soigeneris.com/Warp9.aspx (yes a shameless plug on my part). It replicates two full parallel ports worth of I/O (plus it has a Port 3 as well) and works great with Mach.