Noctua NH-U12DX i4 - Manual (Page 2)

First choose the appropriate set of Narrow-ILM mounting brackets
according to the desired orientation of the cooler:
NM-XF4 NM-XFB5
Noctua NH-U12DX i4 | Installation Manual
After you’ve fixed the springs and screws to the appropriate Narrow-
ILM fastening brackets, please screw the brackets to the heatsink:
Unscrew the preinstalled LGA2011 Square-ILM mounting brackets
(NM-XFB3) and take them off the heatsink.
Then proceed with the steps described in section LGA2011
Square-ILM.
NM-XFB4
NM-XFB5
Then remove the plastic lock-rings, springs and screws from the
Square-ILM mounting brackets and put them into the Narrow-ILM
mounting brackets.
1.
2.
NM-XFB3
NM-XFB4/NM-XFB5
LGA1356/1366 uses a different thread than the pre-installed
screws for LGA2011 (NM-XBT1), so please change the screws as
described below.
Remove the plastic lock-rings, springs and screws (NM-XBT1)
from the mounting brackets.
Required mounting parts:
LGA1356/1366
NM-XBT2 Screws (black)
1.
NM-XBT1 (silver)
After you’ve fixed the springs and screws to the mounting brack-
ets, please proceed with the steps described in section LGA2011
Square-ILM.
Then use the springs and the lock-rings to fix the black
LGA1356/1366 screws (NM-XBT2) to the mounting brackets.
2.
NM-XBT2 (black)
Required mounting parts:
NM-XFB4 Standard Mounting Bar
LGA2011 Narrow-ILM
NM-XFB5 90° Mounting Bar
The LGA2011 Narrow-ILM uses a different hole spacing than
Square-ILM, so please replace the pre-installed Square-ILM
mounting brackets (NM-XFB3) with Narrow-ILM brackets
(NM-XFB4 or NM-XFB5) as described below.
This manual will guide you through the installation process step
by step using the NM-XFB5 bracket as an example. Please note
that the installation procedure is identical for NM-XFB5 and
NM-XFB4.
Airflow
front fan (standard spacers)
rear fan (thick spacers)
Clip position for thick spacers:
Clip position for standard spacers: