Sounds to me like a hardware issue. Do you have an Apple store or dealer near you? I assume you restarted your computer as a test. Were you using the same cable when testing on the hard drive? Jens On Jan 7, 2007, at 6:11 PM, Allan Rube¹ wrote: > I have a MacPro running 10.4.8. I have a firewire compact card > reader. It > worked fine till today. It is not recognized. I even ran system > profiler and > nothing shows up on the bus. I then plugged in a firewire hard > drive with > the same result. > > It is not the reader or the drive as they work fine on my G4 Mac.