I'd be interested to hear from anyone who might have any suggestions to the ollowing problem I'm experiencing on my 133 Ghz 17" Powerbook G4. I've just started using a 2.5 inch 30 gb hard drive for transfering files from my office machine to my Powerbook. The drive runs fine connected to the USB port on the windows based machine at the ofice but when connected to the Powerbook it behaves erratically. It connects and operates fine on the right side USB port of the Powerbook but when connected to the left side USB port it cycles between powerup and power down and doesn't mount. A 2 Gb stck drive I had been using works fine on both ports. Is it possible to have a faulty USB port on one side of the Powerbook ? Are the USB ports an integral part of the logic board or are they separate components ? I've run some different tests on the Powerbook and the logic board and USB ports return a "passed" result. Thanks for any suggestions.