Not exactly correct. You can spin the fan blades fast enough with the can-o-air to have them disengage. I know, done it. They aren't designed to turn at the kind of rpm one can subject them to with a stream of air. Flying shards of plastic and hurt and of course poke you in the eye. Sure it sounds neat and looks cool to see that thing spin like that, but why ruin it? Compressed gasses can be really harmful. I've also blown apart a wheel bearing from a truck doing the same thing drying solvent. Scary to have all those steel rollers ripping by. Yikes! Be careful, but DO clean your fans, Q-tips are a great suggestion then a quick blast to move the dirt out. Brad Loomis San Miguel, CA -----Original Message----- Unplug the computer. Remove the case. Touch the case frame to avoid static problems. Try to work your way from top to bottom, blowing the accumulated debris out of the case. There's nothing you can hurt with compressed air. Pay special to fans and fan blades. I have found it necessary sometimes to use Q Tips to clean fan blades. I also blow inside USB and other ports. In bad cases, I remove all the wires and take the computer outside, then blast everything I can see with canned air. I have a vacuum, but it's not good for much. Too slow and not enough suction. Your computer will thank you. Donna Parsons wrote: > >I also bought a can of Memorex Air Duster and again, no instructions on what >equipment I can safely clean with it or how. > >I look inside my computer and see that the insides really have a buildup of >dust, but I don't want to do anything harmful. Any direction on using >either of these two products would be greatly appreciated or any tips of caution. > I've had computers for years, but have never attempted to clean one, more >than just dusting with a soft cloth on the outside. > >Thank you in advance for any info that may be provided. > >Donna Parsons PCBUILD maintains hundreds of useful files for download visit our download web page at: http://freepctech.com/downloads.shtml