On Wednesday 06 April 2005 01:10 pm, Philippe Landau wrote: > Miark wrote: > > Try connecting the USB cable _before_ you plug in the external > > drive's power supply. > > thanks a lot for all the expertly advice, Joe, Mikkel, Miark and jdow. > it looks like the external case is leaking power to USB, > because it happens even when its power switch is off, > but so far not when i disconnect it from electricity. > i will visit my electrician friend and see what he can measure :-) Tell him to look for ground loops Take a multimeter set it on voltage with the mouse unplugged measure between the computer and the external drive case to case if there is *ANY* voltage potential between the two you have an improperly wired power supply most likely on the external drive Get this fixed asap it is dangerous > > kind regards philippe
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