Hello! Today, Philip J Robar commented on the "USB Question" and said (among other things): "Get a USB 2.0 card, they're cheap - $10-$50 depending on name brand, etc. Make sure it's Mac compatible and/or returnable, last thing I knew one common chipset was compatible and the other wasn't. Don't know if that has changed with Tiger or not." I have the same Quicksilver model and have tried about ten different USB 2.0 PCI cards, but can't get any to work successfully with OS X. (I've tried different cards at different times, most recently with 10.4.3. Although System Profiler recognizes them, when devices are connected, they all cause freezing or the inability to wake from sleep. Some of the cards even claimed to be Mac compatible; all were returnable.) Has anybody successfully used a USB 2.0 PCI card in a Quicksilver (2001) or other Mac without built-in USB 2.0? What brand card did you use? Etc, Etc. Thanks, Jim Thornton