Hi everyone... got another question (should be very easy to answer though). A few days ago I went out to buy fans for my PC that's due in October, since I'm living in Thailand right now, moving back to Germany in a few weeks. The fans here cost a LOT less... The thing is, I went out and bought two 120mm fans and 3 92mm fans... And they all have 3-pin connectors... Last time I built a system, all the fans I used had 4-pin molex connectors... Now my question is... where the hell do I hook up these fans? Power supply? Mainboard? I checked some German computer parts stores online, and they don't sell any fans with regular molex connectors at all... so i guess everyone must use these 3-pin things... Someone care to enlighten me? And why 3 pins? +, - and ground? But why would a fan need a ground?