I installed a case fan, but the wire with 3-pin connector won't reach the connector on the motherboard marked 'sys fan', so I moved the Power supply connector, also 3-pin, to that connector, and connected the case fan to the connector marked Power supply fan on the MB. All the fans seem to be running. Did I do a bad thing? The temp seem to be around what they were before doing this. (49-51c at idle XP1900+ not overclocked).