6 Jan
2009
6 Jan
'09
1:56 a.m.
Christopher Chan wrote:
It is a 4-pin connector, and I think there is a guide, or one side is different than the other. That is why I think I could not have but in in backwards.
Okay, not the stuff you get on boards that are not 'branded'.
MANY newer desktop CPU fans are 4 pin... this way there is power, tach output and PWM control on separate pins (and ground).... doing PWM speed modulation on a 3 pin fan makes reading the tach kind of hard.
but, as you noticed, we are dealing with a HP NC2400 laptop here. http://h10010.www1.hp.com/wwpc/us/en/sm/WF06a/321957-321957-64295-321838-306...