Asus P5LD-MR User Manual - Page 29

2.3.2 Installing the CPU heatsink and fan The Intel® Pentium® 4 LGA775 processor requires a specially designed heatsink and fan assembly to ensure optimum thermal condition and performance. • When you buy a boxed Intel® Pentium® 4 processor, the package includes the CPU fan and heatsink assembly. • Your Intel® Pentium® 4 LGA775 heatsink and fan assembly comes in a push-pin design and requires no tool to install. • If you purchased a separate CPU heatsink and fan assembly, make sure that you have properly applied Thermal Interface Material to the CPU heatsink or CPU before you install the heatsink and fan assembly. • Make sure that you use Intel®‑certified multi‑directional heatsink and fan only. • Make sure that you have installed the motherboard to the chassis before you install the CPU fan and heatsink assembly. • Do not buy a boxed Intel® BTX(Balanced Technology Extend) processor. The boxed CPU cooler is not supported on this motherboard. To install the CPU heatsink and fan: 1. Place the heatsink on top of the installed CPU, making sure that the four fasteners match the holes on the motherboard. Orient the heatsink and fan assembly such that the CPU fan cable is closest to the CPU fan connector. Narrow end of the groove Motherboard hole Fastener Make sure to orient each fastener with the narrow end of the groove pointing outward. (The photo shows the groove shaded for emphasis.) ASUS P5LD-MR 2-