I have a Medion MD6190 collecting dust for a while now. This USB1.1 scanner is only supported under Windows XP. Already did some USB tracing, but never got to the point of grasping the protocol and implementing anything. For example I know there is some firmware sent, and the device then reboots under a new USB-id. Was planning to do some automated tracing using Python-TWAIN, but well, never got that far.
If there's anybody interested and knowledgeable, just drop me mail, and I'll see if I can ship it to you without me breaking the bank. Henk Poley