I’ve opened it up a few times to clean it with no issues but all the tutorials seem to be for everything BUT the 160GB. There is no two screws that I can un-screw to get the fan out. It is in a casing and I can’t figure out how to get it open. I really haven’t tried to hard to figure it out either as I do no want to end up ruining it. Does anyone know how to do this? And to reiterate – There are NO screws to un-screw. It is different than the other models.