So, the Diablotek case that I'm getting comes with 4 fans pre-installed with 4 pin connectors. Say my PSU or motherboard doesn't support 4-6 fans, could someone link me to some splitter cables of some sort that'd work with that set up so I can get two fans, at least, running off one power output?
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your PSU will be able to support 4 fans, if it can't you probaly shouldnt be upgrading your case
you can get connectors to daisy chain together fans VIA molex, that have 2 molex ends (1 male, 1 female) and at the other end a 3 pin fan connector