Daft question but I can’t find the answer. On the Simucube board, are the fan outputs for 12v fans and if so, could it run 2 fans?
It’s a 5v output, you can run a 12V fan off it, but don’t use a high-watt fan, or more than one, as that rail is used to supply the microcontroller and other electronics with power, and it is limited.
I have used an 80mm Noctua fan before, you don’t need a high-speed fan, just something that can evacuate the stale air from the enclosure…
Thank you Phillip for the prompt reply. The case I’ve ordered has a 120mm fan in. I’ll check its not a high wattage and replace if necessary.
Kind Regards
Stu
Cheers Stu, keep us posted 
Its not the wattage the is the most important thing. Noctua has two models of fans for 80mm; one that spins faster and other that is slower. The slower one does not start at 5 V, so it can’t be used. Many of the “silent” 120mm fans are also non-starters at 5 V.
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I was thinking of just getting a 48 - 12 v step down then that would mean no problems.