I previously owned a Galep 4. I was in direct contact with conitec and they also told me, that there is no usb parallel adapter outside that works with the galep4.
In the microcontroller.net forum, there is some type of Exppress card adapter from Delock that are working.
I bought the Delock 66203 adapter and then It works on my old laptop.
Finally, I decided to upgrade to a Galep 5. The Delock 66203 adapter stopped working under Windows 7 x64