Asus P8H77-I - Manual (Page 21)

ASUS P8H77-I 1-11
7. Apply some Thermal Interface Material
to the exposed area of the CPU that the
heatsink will be in contact with, ensuring
that it is spread in an even thin layer.
Some heatsinks come with pre-
applied thermal paste. If so, skip this
step.
The Thermal Interface Material is
toxic and inedible. DO NOT eat it. If
it gets into your eyes or touches your
skin, wash it off immediately, and seek
professional medical help.
6. Insert the load lever under the
retention tab. PnP cap
When you insert the
load lever under the
retention tab, the PnP cap
disengages from the load
plate.