Hi, (back again, I read my post and wonder what is wrong with me today) I have some Old World Macs (PM 7500, PM 9500, ANS ....) But I don't ran Linux on an Old World Mac at the moment. In my PM7500 I had a USB-Card for a while an I had also trouble to get it to work. (under Mac OS) As I remember, I needed an OHCI-Card, UHCI-Cards didn't work for me. I dont't know but maybe Linux can handle both. Hope the helps greetings from Germany Ronny