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After you’ve identified the individual leads, please proceed 
with the following steps to install the OmniJoin adaptor:

Installation

If you replace an existing 40mm fan with the NF-A4x10 in devices 
such as storage or network solutions, it is usually best to use the 
screws (or other mounting mechanism) used for the original fan.

When installing the NF-A4x10 as a case fan, you can either use the 
supplied mounting screws or silicone anti-vibration mounts. In order 
to install the fan using the silicone mounts, please first pull the sili-
cone mounts through the mounting holes of the case. Then put the 
fan onto the silicone mounts and pull them through the mounting 
holes of the fan:

Connection

The NF-A4x10 features a standard 3-pin fan connector. However, 
please note that the fan can also be connected to 4-pin mainboard 
fan headers. If you would like to connect the fan to a 2-pin fan hea-
der, please use the supplied 3:2-pin adaptor (NA-AC2). Please note 
that there are different types of 2-pin connectors, so it is possible that 
the supplied adaptor doesn’t fit. In this case, please use the supplied 
OmniJoin adaptor set as described below. Note that the NF-A4x10 
features an integrated polarity protection so there’s no risk of dama-
ging the fan due to reversed polarity. However, the fan will not work 
when it is connected the wrong way around, so please make sure that 
it is connected correctly when using 2-pin connections.

The NF-A4x10 features a short 20cm primary cable in order to help 
you minimise cable clutter in typical applications. If you need a lon-
ger cable, please add the supplied 30cm extension (NA-EC2).  

NF-A4x10 5V  | User Manual 

Cleaning and Maintenance

Fans inside computer cases tend to accumulate dust over longer pe-
riods of usage. In order to maintain maximum performance, please 
clean your fans regularly using a duster, slightly moist tissue or 
canned air. Please be careful not to use too much force in order to 
prevent any damage to the fan. Please don’t use a vacuum cleaner as 
this may apply excessive force to the fan. In order to ensure flawless 
operation over many years of usage, the NF-A4x10’s premium grade 
SSO2 bearing is fully sealed to prevent the entering of fine dust par-
ticles. Please note that the fan is not designed to be taken apart by 
the user. Removing the impeller from the frame will break the sealing 
of the bearing and results in a loss of warranty.

Using the OmniJoin adaptor set

The supplied OmniJoin adaptor set allows you to easily connect the 
NF-A4x10 to proprietary fan headers if you want to replace a 40mm 
fan in devices such as network or storage solutions. 

Please first identify the individual leads of the OmniJoin adaptor and 
the original fan. The OmniJoin adaptor uses black for ground (GND) 
and red for +5V. The black lead of the adaptor has to be matched 
with the original GND lead and the red adaptor cable with the original 
+5V lead. Many fan cables use the same colours as the OmniJoin 
adaptor, but please note that there is no guarantee for this, so make 
sure to correctly identify the GND and +5V leads of the original fan. 
Please refer to the manual that came with the device or contact the 
device manufacturer if in doubt.

Step 1

Cut off the connector of the fan that was originally used in the de-
vice. Make sure not to cut the cable directly at the connector, there 
should be least a 2-3 centimetres of cable left:

Note that it is not necessary to remove  the insulation from the cables.

Step 2

Then take one of the supplied 3M Skotchlok™ connectors and 
insert the GND lead of the original cable and the black lead of the 
OminJoin adaptor into the two holes of the Skotchlok™ connector. 
Make sure that both leads are fully inserted and pushed all the 
way back.

Step 3

Then use flat nose pliers to push down the white button of the 
Skotchlok™ connector. Make sure that the button is not jammed and  
pushed all the way down. If the button is jammed, push it down from 
both sides of the Skotchlok™ connector using the flat nose pliers.

After you’ve fixed the original fan’s cable to the OmniJoin adaptor 
using the Skotchlok™ connectors, simply connect the NF-A4x10 to 
the adaptor in order to use it in your device.

OmniJoin Adaptor

3M Skotchlok

TM

 connectors

Connector of the original fan

+5V

GND

Make sure to correctly 

identify the GND and

+5V leads of the 

original fan!

2-3cm minimum!

Repeat Step 2 and 3 for the +5V lead.

Caution:

 Being a 5V fan, the NF-A4x10 5V can not be run at 12V and 

will be damaged when used with typical 12V power sources such as 
PC mainboard fan headers.

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