BTW- a little off topic but.
I got this point of sale system that also uses a security dongle in a parallel port.
An addon card will not work and I don't have to tell you how impossible it is becoming to find motherboards with a parallel port.
The people who make it were trying to hold me hostage and wanted me to pay a couple thousand to trade my dongle for a USB one. I picked up 2 older but unused motherboards and CPU's from ebay while I still could.