Asus Desktop Barebone Pundit P3-PH5 - Manual (Page 24)

2- Chapter 2: Basic installation
2.4.2 Installing the CPU fan and heatsink assembly
The system package includes a pre-installed proprietary CPU fan and heatsink
assembly to ensure optimum thermal condition and performance.
DO NOT replace the proprietary CPU fan and heatsink with other models.
To install the CPU fan and heatsink assembly:
1. Place the heatsink on top of the
installed CPU.
2. Drive four screws into the fan
holes to secure the fan to the
motherboard.
3. Connect the CPU fan cable.
Do not forget to connect the CPU fan connector! Hardware monitoring errors
can occur if you fai to plug this connector.