We have an old version of barcode printing software that has a parallel port security key. The desktop that the software is running on is dying so we were able to find (amazingly) the installation file for the same version of the software and we were able to successfully install it on a Win 10 Laptop using compatability mode. Of course the laptop does not have a parallel port so we bought a USB > Parallel port from Amazon. Unfortunately, the software still does not see the key when it is plugged into the USB adaptor. We are about to give up but thought I would post this just to see if maybe there was a windows setting or something that someone could suggest that might make this work? Crazier things have happened!!! Thanks for any suggestions!