Speedfan

Hi,
The rear fan in my case is connected to mobo using 3pin.
Can I able to control the speed of that fan using Speedfan ?
If,YES.
Please tell me how.

Hope these guides help:

Using SpeedFan to automatically control your PC’s fan speeds » unitstep.net
SpeedFan article: Advanced Fan Speed Control
How to use Speedfan

Thanks!