Asus V2-PH1 Manual page 25

If you purchased a separate CPU heatsink and fan assembly, make sure
that a Thermal Interface Material is properly applied to the CPU heatsink
or CPU before you install the heatsink and fan assembly.
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.
3. When the fan and heatsink assembly is in place, connect the CPU fan
cable to the connector on the motherboard.
ASUS Vintage2-PH1 2-7