Introduction
These steps indicate how to remove/ replace the Samsung 351U's fan.
Tools
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            First, remove the back of the laptop by unscrewing the (4 mm) screws shown using the PH0 screw bit. 
 
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            Before you remove it, make sure to unplug it from the holster shown in the image. 
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            Upon doing these steps, you will be able to remove the fan with ease. 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.