ModCrash's step by step guide on how to build a gaming PC
Build a Gaming PC: Some Quick Cable Management
PSU cables routed.
Now that we have the power supply installed, we can go ahead and start some basic cable management. Run your cables through any slots that components or plugs will be. Try to be neat and organized at this point. Doing this now will save you time later ensuring that you will have a super clean build. If you are using a non-modular PSU try to bundle together any extra cables that you may have. Find a place to tuck that bundle into. For the NZXT H440, there is plenty of room in the power supply bay to hide those cables. For all other cables try to keep cables that route the same direction together. For example, your PCI-E and 24 pin power cables go in the same general direction. You can keep those together which will help keep the cables neater.