ZALMAN CNPS7700 - Manual (Page 5)

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1) Intel Socket 1155 / 1156 / 775 Installation
Install the Clip Support to the motherboard according to the socket-type.
5. Installation
Clear off any particles or residue from the CPU’s surface then spread
a thorough layer of Thermal Grease on the CPU and the base of the
cooler.
Please make note of the Lever Slot’s direction when
installing the Clip Support.
Caution
Nut
Washer
Bolt(silver)
Clip Support
M/B
Socket 1155 / 1156
Socket 775
Lever
Slot