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HP Z420 Liquid Cooler Install

HP Recommended
HP Z420 (V2 Motherboard)
Microsoft Windows 10 (64-bit)

Hey everyone!  I have an HP Z420 that I am upgrading for some HD gaming.  I already swapped the processor for a E5 1650 V2 Hexacore and I would like to overclock it.  In order to keep my processor cool while overclocking I got an HP liquid cooler off eBay HP PN: 657398-002.  

First question: Is this the right cooler?  I havent found anything to confirm it so I am hoping someone can. 

Second question: How the heck do I install this thing?  I havent opened my system back up yet to see, but it definitely is more complicated than the standard cooler.   I can understand the 4 screws and piece that fits over the processor, but how is the fan/radiator part installed? Where does the second power cord plug into?  Can anyone point me to a guide?



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