As I might have suggested, just call Coolermaster store and ask them for it. The Cosmos cases will take one, but I don't know about the other cases, just call CM.
Feature notes that it's ideal for Stacker & other cases. Tried calling to get clarification on case support but just got a voicemail box the first time. when I called back and asked for tech support, just got a bunch of static. Struck out twice there