I have a powerpc g4. I recently bought a 8gb HP flash drive in order to move files from this computer to a new iMac. When i plug the flash drive into the keyboard, I get the message saying 'usb low power notice'. When I plug it into a usb on the monitor or back of the computer it does nothing and never shows up on the desktop. According to the package it works with pc/mac os 10.3 or later. I have 10.4 Any input would be appreciated.