Asus P5B Premium Series Hardware User Manual page 40

5. Rotate each fastener clockwise to ensure correct orientation when
reinstalling.
Refer to the documentation in the boxed or stand-alone CPU fan package for
detailed information on CPU fan installation.
2-12
The narrow end of the
groove should point
outward after resetting.
(The photo shows the
groove shaded for
emphasis.)
Narrow end of the groove
Chapter 2: Hardware information