![](/images/new-backgrounds/1194348/194348163x1.webp)
Figure 4-9. Closing the Locking Lever
13.Very carefully apply the thermal interface material (heat radiation sheet) on top of the processor so that it is completely covered. See Figure
Notes: The thermal material may already be applied to the heat sink.
The thermal interface material is very fragile, it must be handled very carefully. If the cooling sheet is damaged, it must be replaced with a new one. Reuse of the cooling sheet is not permitted.
Do not stick multiple cooling sheets on a processor, only one is needed. Keep any remaining cooling sheets as spares.
Figure 4-10. Installing the Thermal Cooling Sheet
14.Install the heat sink on CPU. See Figure 4-11.
NOTE: Be aware of direction of heat sink (see figure below).