Installation is a snap. Ensure that all three latches on each side of the heatsink engage the mounting clips on the CPU retention module. Then rotate the locking lever in a clockwise motion to the lock position. The AK862 installation manual can be found here (522KB PDF).
The photograph below contains a screwdriver that points out the locking lever, which is in an "unlocked" position. Note that the screwdriver is being used as a pointing device and is not needed for installation. The unit is packaged with the fan already affixed to the heatsink.
The latches are aligned with the mounting clips and the locking lever is then placed in the "locked" position, which secures the heatsink to the CPU.
Another view of the AK862 on the GigaByte 8KNXP-SLI motherboard.
The fan control panel is mounted and secured using an available PCI slot at the rear of the case. When the dial is set in the low position, the fan spins at 2,000 RPM and increases to 4,000 RPM in the high position.
Fan Control Panel
The final step is to connect the three-pin connectors to power the fan and to monitor the fan's speed.
The Akasa AK862 is installed and running. Now on to the tests!