How to Install a Noctua NH-D15 Black (& Fan Placement)
NOCTUA NH-D15 cpu cooler fan not clicking back in - Troubleshooting - Linus Tech Tips
Fan Orientation and Ugliness. | [H]ard|Forum
Noctua NH-D15 Orientation with one fan. I can't fit both fans like I'm sure most of you can't, so I tested two setups. The one you see now and rotated CW 90deg.