You will use the Noctua NH-U12S CPU Cooler.
This has a 120mm high CPU Cooler Heat Sink.
It comes standard with one 120mm NF-F12 CPU Fan.
You will be adding a second 120mm NF-F12 CPU Fan in push-pull configuration.
You would be using the Mounting System for INTEL, and the common Accessories.
Unbox the contents of the INTEL Mounting System.
Read the LGA2011 Guide.
Note: The Back Plate is not required for an LGA2011 assembly.
Open the common Accessories box.
You would be using the 4 thicker anti-vibration pads for installing the 2nd NF-F12 Fan.
You would be using the 2 Clips for mounting the 2nd NF-F12 Fan.
Place everything else back in the box for storage.
This is your Noctua NH-U12S CPU Cooler.
Remember to remove the plastic cover before installation!
This is your CPU Cooler Heat Sink.
Make a note of the Fan Connector.
The Noctua NH-U12S CPU Cooler comes standard with one NF-F12 Fan.
Take a close look at how the 2 Clips are used to fasten the Fan to the Heat Sink.
Practice taking these clips off and putting them back on.
It can be a bit tricky.