I am puzzled as to why this is happening so quickly there was visible dust on the front panel of my case which I would not like to have I was just wondering if anyone has any tips on how to reduce dust build up and best ways to clean it out. My case is the CM-690 II with a 140mm intake 120mm exhaust rear 120mm side intake 140mm top exhaust as well as a 120 mm CPU cooling fan if any more info is needed I will provide it.