bryantdunivan

I am working on a build using the Dark Base 900 Rev 2 with an Asus Maximus Extreme XII with included Asus Fan Extension II. My questions: 1) Can I use, or should I use both at the same time? 2) If I can only use 1, which one would be the best. If I used 2 at the same time, how would the connections go on each board? Thanks for looking.