On 04/12/11 16:30, lm-sensors-request@xxxxxxxxxxxxxx wrote: > Date: Sun, 4 Dec 2011 11:03:45 +0100 > From: Jean Delvare <khali@xxxxxxxxxxxx> > > Hi Charles, [snip] > On 4-pin headers, the PWM signal is separated from the power. So you > can't control a 3-wire fan plugged in a 4-pin header (the PWM signal is > on the unconnected pin [1].) > > -- Jean Delvare Hello Jean :) I already replied to this but just realised I am controlling a 3-wire S-Flex SFF21E fan (http://www.scythe-usa.com/product/acc/002/sflex_detail.html) on a 4-wire port on an ASUS P8H76-V motherboard (works on both CHA_FAN and CHA_FAN2). If the 4-pin fan header is regarded as a 3-pin header with an extra pin then the unconnected pin is the extra pin. Perhaps ASUS have used an unconventional pinout ... ? Best Charles _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
