When I brought my CNC I also brought a new motherboard, which did not have a LPT port on it so I fitted a PCI-E LPT card, I soon found out I had no X axis, so I used and old PC with a built on LPT, no problems I assumed the problem with the new board was low voltage so I brought a LPT Buffer and re installed the first PC problem guess what same problem, any one come across this before? is it a pin out problem?